CN105769116B - Method and apparatus for determining the optometry of a pair of eye glasses - Google Patents
Method and apparatus for determining the optometry of a pair of eye glasses Download PDFInfo
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- CN105769116B CN105769116B CN201610316763.6A CN201610316763A CN105769116B CN 105769116 B CN105769116 B CN 105769116B CN 201610316763 A CN201610316763 A CN 201610316763A CN 105769116 B CN105769116 B CN 105769116B
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B3/00—Apparatus for testing the eyes; Instruments for examining the eyes
- A61B3/10—Objective types, i.e. instruments for examining the eyes independent of the patients' perceptions or reactions
- A61B3/103—Objective types, i.e. instruments for examining the eyes independent of the patients' perceptions or reactions for determining refraction, e.g. refractometers, skiascopes
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B3/00—Apparatus for testing the eyes; Instruments for examining the eyes
- A61B3/10—Objective types, i.e. instruments for examining the eyes independent of the patients' perceptions or reactions
- A61B3/103—Objective types, i.e. instruments for examining the eyes independent of the patients' perceptions or reactions for determining refraction, e.g. refractometers, skiascopes
- A61B3/1035—Objective types, i.e. instruments for examining the eyes independent of the patients' perceptions or reactions for determining refraction, e.g. refractometers, skiascopes for measuring astigmatism
Abstract
The invention discloses a method and equipment for determining the optometry of eye glasses. The method and the system comprise the following steps: the objective optometry module is used for objectively measuring ametropia of human eyes; the calculation module is used for generating a plurality of objective refraction lists, at least comprising a first objective refraction list: fs1, Fc1, Fa1, and second objective prescription: fs2, Fc2, Fa 2; the optometry module determines a plurality of subjectively optimized sphere degrees fs1 and fs2 from a plurality of objective optometry sheets generated by the calculation module; the output module is used for generating the optometry lists of a plurality of glasses, and at least comprises a first optometry list fs1, Fc1 and Fa1 and a second optometry list fs2, Fc2 and Fa 2. The subject tries on the lenses of the prescription of a plurality of eyeglasses to determine the final prescription of the eyeglasses. Improved systems are also provided. The method and the equipment of the invention provide an optometry method and equipment which can obtain a more reasonable optometry sheet which is more easily accepted by a measured person, and can obtain an optometry result of glasses, wherein the imaging distortion of the glasses is reduced and eliminated.
Description
Technical Field
The present invention relates to an improved method and system for refractive correction of the human eye, and more particularly to a method and system for improving vision correction by reducing and eliminating distortion of the lens image.
Background
The consumer's adaptation to a new pair of spectacles is a major problem in the spectacles industry. This problem is generally related to distortion of the lens image and adaptation of new lenses can be a painful experience for a segment of people. Once the distortion of the lens is not addressed, three consequences result. First, consumers often require one to two weeks to accommodate, and the experience of each individual can vary from person to person. Second, because the consumer cannot accommodate new eyeglasses, a significant portion of the new eyeglasses may be discarded, and because the new eyeglasses do improve vision, it is the personal responsibility to accommodate the new eyeglasses, and discarding a pair of eyeglasses results in an economic loss. Third, a significant portion of the population may not have a suitable pair of glasses available at a plurality of eyeglass stores and they will simply discard the glasses as a way of vision correction.
Figure 1 shows the optometry process of today's eyeglass industry, which relies on optometrist skill and experience to determine the starting point of the optometry and the final prescription for the eyeglasses. First, the computerized optometry system 11 is used to obtain an objective measurement of refractive error of the human eye and to obtain an approximate objective optometry 12, which includes a sphere power Fs, a cylinder power Fc, and a cylinder axis angle Fa. Second, the optometrist will determine a general sphere power through optometry 13 and then subjectively optimize the sphere power, cylinder power, and cylinder axis angle based on a computer optometry sheet, the optometrist's experience and technique, and the subject's subjective feedback. The first step of subjective optometry is to optimize out the cylinder axis angle, and optometrist can set up the optometry machine according to his experience, objective optometry's astigmatic degree, astigmatic angle, then lets the surveyed person see a astigmatic dish earlier and then sees the visual chart and obtains the feedback of surveyed person, adjusts cylinder axis angle according to the feedback, until accomplishing the subjective optimization of cylinder axis angle. The second step of subjective refraction is to optimize the cylinder power, and the optometrist can set the optometry machine according to his experience, the astigmatism power of objective refraction and the astigmatism angle determined by the person in charge, so that the person to be measured can obtain the feedback of the person to be measured by looking at the visual chart, and then gradually adjust the cylinder axis power according to the feedback until the subjective optimization of the cylinder axis power is completed. The third step of subjective optometry is to optimize the sphere power, and an optometrist can set the optometry machine according to his experience, the astigmatism power which is subjectively determined and the astigmatism angle which is determined by a main tube, so that the measured person can obtain the feedback of the measured person by looking at the visual chart, and then gradually adjust the cylinder sphere axis power until the subjective optimization of the cylinder sphere axis power is completed. The optometrist repeats the same steps to perform a subjective refraction of another eye of the person being measured. And thirdly, determining a final optometry list of the glasses, wherein the final optometry list comprises the subjectively optimized sphere power fs, the subjectively optimized cylinder power fc and the subjectively optimized cylinder shaft angle fa of each eye. Traditional optometry does accomplish the purpose of improving vision, but whether the tested person can enjoy providing improved vision with new glasses is a completely different question.
Figure 2 shows another novel method for determining an prescription for digitally customized eyewear based on wavefront measurements. First, an ocular aberrometer is used to measure all refractive errors of the human eye. Because the wavefront sensor for the eye aberrometer not only accurately measures the focusing error and astigmatism (consisting of cylinder power and cylinder axis angle) of the human eye, but also measures other high-order aberrations, such as coma, spherical aberration, and all other irregular aberrations of the human eye, which are more accurate than the traditional computer optometry machine. Second, a wavefront prescription 22 is generated that includes a wavefront-optimized sphere power Fs, a wavefront-optimized cylinder power Fc, and a wavefront-optimized cylinder axis angle Fa. Based on the high precision of the wavefront detector and the wavefront optimization according to the high-level aberration, the wavefront-optimized cylindrical lens degree Fc and the wavefront-optimized cylindrical lens axis angle Fa are optimal values, and subjective optimization is not needed. Thirdly, the sphere power is subjectively optimized by the optometry machine 23, an operator sets the optometry machine according to the sum of the cylinder power and the cylinder axis angle objectively optimized in wavefront, the measured person is allowed to see the feedback of the measured person of the visual chart, and then the cylinder sphere power is gradually adjusted until the subjective optimization of the cylinder sphere focal power is completed. The optometrist repeats the same steps to perform a subjective refraction of the sphere power of the other eye of the person being measured. And thirdly, determining a final optometry list of the glasses, wherein the final optometry list comprises subjectively optimized sphere power Fs, wave front optimized cylinder power Fc and wave front optimized cylinder shaft angle Fa of each eye.
The wavefront method of fig. 2 does provide better vision correction than the conventional prescription of fig. 1. However, as with the conventional prescription of fig. 1, whether the tested person can enjoy the improved vision provided by the new wavefront-optimized eyewear can be a completely different problem.
Thus, while many methods and principles of vision correction are known in the art, all of the existing correction methods suffer from one or more disadvantages. Thus, there remains a need to improve existing methods and apparatus to achieve practical, perfect refractive correction.
Disclosure of Invention
The invention aims to provide an optometry method and equipment capable of obtaining an optometry sheet which is more reasonable and easier to be accepted by a measured person, so that an optometry result of glasses capable of reducing and eliminating imaging distortion of the glasses can be obtained.
The technical scheme adopted by the invention for solving the technical problems is as follows:
a process for determining information about a refractive correction system of an eye, comprising the steps of:
measuring the refractive error of the human eye visually with an objective refraction measuring device independent of the subjective feedback of the person being measured;
producing a plurality of objective prescriptions by wherein said objectively measuring refractive error of a human eye produces a plurality of objective prescriptions, wherein the plurality of objective prescriptions includes at least a first objective prescription including a first objectively determined sphere degree Fs1, a first objectively determined cylinder degree Fc1, a first objectively determined cylinder axis angle Fa1, and a second objective prescription including a second objectively determined sphere degree Fs2, a second objectively determined cylinder degree Fc2, a second objectively determined cylinder axis angle Fa 2; wherein said first objective prescription is optimized for visual quality and said second objective prescription is optimized for visual distortion;
determining a plurality of subjectively optimized sphere power degrees through an optometry machine, wherein the plurality of subjectively optimized sphere power degrees at least comprise a first subjectively optimized sphere power fs1 and a second subjectively optimized sphere power fs2, wherein the optometry machine is composed of a plurality of spheres and cylindrical lenses, the control of the cylindrical lenses in the optometry machine is only completed according to a plurality of objective optometry lists generated in the optometry machine, and the subjective optometry requires a measured person to see a visual chart through the optometry machine and provide subjective feedback;
generating a prescription for a plurality of eyeglasses, including at least a first prescription comprising a first subjectively optimized sphere degree fs1, a first objectively determined cylinder degree Fc1, a first objectively determined cylinder axis angle Fa1, and a second prescription comprising a second subjectively optimized sphere degree fs2, a second objectively determined cylinder degree Fc2, a second objectively determined cylinder axis angle Fa 2; wherein said first prescription is for optimizing visual quality and said second prescription is for optimizing visual distortion.
Further, the method includes fitting lenses of the plurality of eyeglass prescriptions and determining a final eyeglass prescription based on the measured person's selection, fitting the lenses of the eyeglasses selected based on the plurality of eyeglass prescriptions, placing the lenses in a fitting frame, and fitting the measured person on the face.
More preferably, the objective refraction measuring device is directed to measuring wavefront aberrations of a human eye, the wavefront aberrations including coma and spherical aberration.
The difference in the plurality of objective prescriptions generated may be in the cylinder power. The measured person's left and right eye refractive data or/and the measured person's past worn old eye refractive data may be further considered.
The difference in the plurality of objective prescriptions generated may be in the cylinder axis angle. The measured person's left and right eye refractive data or/and the measured person's past worn old eye refractive data may be further considered.
Preferably, the prescription for the final lens further includes spherical aberration.
Also provided is a system for determining a refractive correction of an eye, comprising:
an objective optometry module is used for measuring the ametropia of human eyes in a visitor mode, and objective measuring equipment is independent of subjective feedback of a measured person;
a calculation module for producing a plurality of objective prescriptions based on said objective measurements of refractive errors of the human eye, including at least a first objective prescription comprising a first objectively determined sphere degree Fs1, a first objectively determined cylinder degree Fc1 and a first objectively determined cylinder axis angle Fa1, and a second objective prescription comprising a second objectively determined sphere degree Fs2, a second objectively determined cylinder degree Fc2 and a second objectively determined cylinder axis angle Fa 2; wherein said first objective prescription is optimized for visual quality and said second objective prescription is optimized for visual distortion;
a optometry module configured to determine a plurality of subjectively optimized sphere power levels from a plurality of objective optometries generated by said calculation module, including at least a first subjectively optimized sphere power level fs1 and a second subjectively optimized sphere power level fs2, said optometry module comprising a plurality of spheres and a cylindrical lens, control of the cylindrical lens in the optometry module being accomplished only in accordance with said plurality of generated objective optometries, said subjective optometry requiring a person being measured to view a visual acuity chart through the optometry module and provide subjective feedback;
an output module for generating a prescription for a plurality of eyeglasses, including at least a first prescription including a first subjectively optimized sphere degree fs1, a first objectively determined cylinder degree Fc1, a first objectively determined cylinder axis angle Fa1, and a second prescription including a second subjectively optimized sphere degree fs2, a second objectively determined cylinder degree Fc2, a second objectively determined cylinder axis angle Fa 2; wherein said first prescription is for optimizing visual quality and said second prescription is for optimizing visual distortion.
More preferably, the objective refraction measuring device involves measuring wavefront aberrations of the human eye with a lens alignment probe.
The difference in the plurality of objective prescriptions generated may be in the cylinder power. The measured person's left and right eye refractive data or/and the measured person's past worn old eye refractive data may be further considered.
The difference in the plurality of objective prescriptions generated may be in the cylinder axis angle. The measured person's left and right eye refractive data or/and the measured person's past worn old eye refractive data may be further considered.
More preferably, the prescription for the plurality of eyeglasses further comprises spherical aberration.
The present invention also provides another system for determining a refractive correction of an eye comprising:
an objective optometry module is used for measuring the ametropia of human eyes in a visitor mode, and objective measuring equipment is independent of subjective feedback of a measured person;
a calculation module for producing a plurality of objective prescriptions based on said objective measurements of refractive errors of the human eye, including at least a first objective prescription comprising a first objectively determined sphere degree Fs1, a first objectively determined cylinder degree Fc1, a first objectively determined cylinder axis angle Fa1, and a second objective prescription comprising a second objectively determined sphere degree Fs2, a second objectively determined cylinder degree Fc2, a second objectively determined cylinder axis angle Fa 2; wherein said first objective prescription is optimized for visual quality and said second objective prescription is optimized for visual distortion.
More preferably, the objective refraction measuring device involves measuring wavefront deviations of the human eye, including coma and spherical aberrations.
The difference in the plurality of objective prescriptions generated may be in the cylinder power. The measured person's left and right eye refractive data or/and the measured person's past worn old eye refractive data may be further considered.
The difference in the plurality of objective prescriptions generated may be in the cylinder axis angle. The measured person's left and right eye refractive data or/and the measured person's past worn old eye refractive data may be further considered.
More preferably, the prescription for the plurality of eyeglasses further comprises spherical aberration.
Preferably, the system is further configured to be combined with a optometry unit for subjectively optimizing the sphere power of a plurality of objective optometry units.
Also, the present invention provides another system for determining a refractive correction of an eye comprising:
an input device configured to receive eye refraction data;
a calculation module for generating a plurality of initial optotypes based on the received human eye refractive data, including at least a first initial optotype including a first initial sphere degree Fs1, a first initial cylinder degree Fc1, a first initial cylinder axis angle Fa1, and a second initial optotype including a second initial sphere degree Fs2, a second initial cylinder degree Fc2, a second initial cylinder axis angle Fa 2; wherein said first initial prescription is optimized for visual quality and said second initial prescription is optimized for visual distortion;
a optometry module configured to determine a plurality of subjectively optimized sphere power levels from a plurality of initial optometry orders generated by said calculation module, including at least a first subjectively optimized sphere power level fs1 and a second subjectively optimized sphere power level fs2, said optometry module comprising a plurality of spheres and a cylindrical lens, control of the cylindrical lens in the optometry module being accomplished only in accordance with said plurality of generated initial optometry orders, said subjective optometry requiring a person being measured to view a visual chart through the optometry module and provide subjective feedback;
an output module for generating a prescription for a plurality of eyeglasses, including at least a first prescription including a first subjectively optimized sphere degree fs1, a first objectively determined cylinder degree Fc1, a first objectively determined cylinder axis angle Fa1, and a second prescription including a second subjectively optimized sphere degree fs2, a second objectively determined cylinder degree Fc2, a second objectively determined cylinder axis angle Fa 2; wherein said first prescription is for optimizing visual quality and said second prescription is for optimizing visual distortion.
Further, the initial refractive data includes at least one sphere power, one cylinder power, and one cylinder axis angle.
Further, the initial refractive data includes coma and spherical aberration.
The difference in the initial prescription generated may be in the cylinder power. The measured person's left and right eye refractive data or/and the measured person's past worn old eye refractive data may be further considered.
The difference in the plurality of objective prescriptions generated may be in the cylinder axis angle. The measured person's left and right eye refractive data or/and the measured person's past worn old eye refractive data may be further considered.
Further, the input device includes, but is not limited to: the keyboard, the touch screen and the electronic communication unit are used for connecting and communicating with other devices.
More preferably, the prescription for the plurality of eyeglasses further comprises spherical aberration.
Also, the present invention provides a system for determining a refractive correction of an eye, comprising:
an input device configured to receive a plurality of initial prescriptions, including at least a first initial prescription including a first initial sphere power Fs1, a first initial cylinder power Fc1, a first initial cylinder axis angle Fa1, and a second initial prescription including a second initial sphere power Fs2, a second initial cylinder power Fc2, a second initial cylinder axis angle Fa 2; wherein said first initial prescription is optimized for visual quality and said second initial prescription is optimized for visual distortion;
a optometry module configured to determine a plurality of subjectively optimized sphere power levels from a plurality of initial optometry orders received by said input device, including at least a first subjectively optimized sphere power level fs1 and a second subjectively optimized sphere power level fs2, said optometry module comprising a plurality of spheres and a cylindrical lens, said control of the cylindrical lens within the optometry module being accomplished only in accordance with said plurality of generated initial optometry orders, said subjective optometry requiring a person being measured to view a visual chart through the optometry module and provide subjective feedback;
an output module for generating a prescription for a plurality of eyeglasses, including at least a first prescription including a first subjectively optimized sphere degree fs1, a first objectively determined cylinder degree Fc1, a first objectively determined cylinder axis angle Fa1, and a second prescription including a second subjectively optimized sphere degree fs2, a second objectively determined cylinder degree Fc2, a second objectively determined cylinder axis angle Fa 2; wherein said first prescription is for optimizing visual quality and said second prescription is for optimizing visual distortion.
Further, the input device includes, but is not limited to: the keyboard, the touch screen and the electronic communication unit are used for connecting and communicating with other devices.
More preferably, the prescription for the plurality of eyeglasses further comprises spherical aberration.
The prescription of a plurality of glasses obtained by the information processing method for determining the system for refractive correction of the human eye and the system for determining refractive correction of the human eye according to the present invention includes at least a first prescription for optimizing visual quality and a second prescription for optimizing visual distortion. Thus, the measured person can select a group of optometry parameters really suitable for wearing by himself through try-on, and a pair of glasses most suitable for himself is obtained.
Since it is known that in the selection of optimizing visual quality and optimizing visual distortion, the previous optometry only aims at optimizing visual quality (i.e. optimizing visual quality), but a considerable part of spectacle wearers cannot adapt, bring various discomfort or even insist wearing after wearing the refraction correction spectacles with high visual quality obtained by optometry for a long time, and long-term research shows that when the vision quality is properly reduced by adjusting correction parameters, the visual distortion can be greatly improved, i.e. when the vision quality is better (rather than optimal when the vision quality is optimized), the visual distortion is greatly optimized (the visual distortion is greatly reduced, to the extent that the wearer is fully acceptable), this selection of prescription parameters is a way to optimize visual distortion.
Such selection of the prescription parameters (first and second objective prescriptions or first and second initial prescriptions) that optimize visual quality and optimize visual distortion can be obtained by calculation after objective measurement of a series of refractive data by an objective refractive measurement device; the refraction data can also be input through an input device and then obtained through calculation; but also directly through the input device. Finally, after subjective optimization parameters are obtained, the optometry lists of at least two glasses are obtained, one is for optimizing visual quality, the other is for optimizing visual distortion, and a measured person selects a pair of glasses which are suitable for being actually worn by the measured person after trying on. Some people who are more sensitive to visual distortions can obtain a pair of glasses that, although the visual quality is not optimal, is already good enough and is suitable for wearing by themselves.
Such alternative objective, initial or final prescription of different parameters may include both visual quality optimization and visual distortion optimization; or a plurality of progressive changes, so that the measured person can select the optometry sheet and the corresponding glasses which are really suitable for the measured person through the progressive changes with different degrees, and a pair of perfect balance glasses between sufficient clearness and sufficient adaptation can be really found. However, the scheme of reasonably and skillfully giving up the visual quality slightly to obtain the optimization of the visual distortion has never been tried in the prior art, and undoubtedly, the technical scheme of the invention provides a brand-new idea, brings revolutionary changes to vision correctors, and possibly enables people wearing glasses to have no worry of adapting to new glasses for a long time, so that people can obtain extremely good experience from the beginning when wearing the new glasses.
Drawings
Fig. 1 shows a flow diagram of a conventional method for determining an prescription for eyeglasses.
Fig. 2 shows a schematic flow diagram of another method for determining an prescription for wavefront digitally customized eyewear.
Figure 3 shows a schematic diagram of the optometric flow path for determining the position of the eyeglasses in accordance with the present invention.
Fig. 4 shows one of the schematic diagrams of the system for determining an prescription for eyeglasses of the present invention.
Fig. 5 shows a second schematic of the system for determining an prescription for eyeglasses of the present invention.
Fig. 6 shows a third schematic diagram of the system for determining an prescription for eyeglasses according to the present invention.
Figure 7 shows four schematic views of a system for determining an prescription for eyeglasses in accordance with the present invention.
Detailed Description
The invention is further described below with reference to the figures and examples.
The lenses of the spectacles are typically located 12.5 mm in front of the top of the cornea of the eye and the nodal point (nodal points) of the eye itself is typically 7 mm behind the top of the anatomical cornea of the eye, and this distance of 19.5 mm from the lens to the nodal point of the eye results in a reduction of the image by the negative lens (near vision correction) and a magnification of the image by the positive lens (far vision correction) when the eye passes through the lenses. The measured person cannot feel the distortion caused by the glasses during the optometry process because the letters of the visual chart are too small during the optometry process and therefore cannot be detected. However, the distortion caused by the glasses can have a significant impact on the consumer experience.
The problem of glasses causing image distortion can neither be solved by wavefront refraction of fig. 2 nor by the conventional refraction method of fig. 1.
The conventional prescription of figure 1 relies on the individual experience and skill of each optometrist to set the astigmatism start and end points of the lens. The traditional optometry method has at least three disadvantages: first, the optometry process is based on the experience of the optometrist and no scientific calculation is available, so that generally no optimal results are obtained. Second, the conventional optometry process cannot be standardized because the experience of each optometrist is different, and the experience of each optometrist also varies with time. Thirdly, the traditional optometry process cannot take into account the difference of each person in the large degree of distortion tolerance, and although each person is different, people get the same (one sizing all) solution.
The present invention provides methods and systems for reducing and eliminating distortion of an image of eyewear.
As shown in FIG. 3, the present invention provides, in a first step, an information processing method for determining a refractive correction system of an eye, in which an objective refractive measurement device 31 is used to visually measure refractive error of the eye, the objective refractive measurement device 31 is capable of accurately and objectively measuring a refractive error 32 of the eye, which may include a focus error, a cylinder error, coma aberration, and spherical aberration of the eye, without depending on subjective feedback of the measured person. Second, a plurality of objective prescriptions is generated by objectively measuring the refractive error of the human eye, and in one embodiment, the plurality of objective prescriptions includes at least a first objective prescription 33a including a first objectively determined sphere degree Fs1, a first objectively determined cylinder degree Fc1, a first objectively determined cylinder axis angle Fa1, and a second objective prescription 33b including a second objectively determined sphere degree Fs2, a second objectively determined cylinder degree Fc2, a second objectively determined cylinder axis angle Fa2, wherein the first objective prescription 33a is optimized for visual quality and the second prescription 33b is optimized for visual distortion.The third stepA optometric machine 34 is used to determine a plurality of subjectively optimized sphere power levels. In one embodiment, the plurality of subjectively optimized sphere power levels includes at least a first subjectively optimized sphere power level fs1, and a second subjectively optimized sphere power level fs 2. The optometric machine 34 is placed in front of the eye of the person to be tested and is viewed through it so that the focus offset and the lenticular offset are corrected by the different corrective lenses selected. The optometry unit 34 is composed of a plurality of spherical lenses and cylindrical lenses, a measured person feeds back that he/she can recognize words on the visual chart through the correction lenses of the optometry unit, only the spherical lens degrees are allowed to be regulated and controlled by an operator, and the control of the cylindrical lenses in the optometry unit is automatically completed only according to a plurality of objective optometry sheets. Fourthly, generating a plurality of optotypes of the glasses, at least comprising a first optotype36 a: including a first subjectively optimized sphere degree fs1, a first objectively determined cylinder degree Fc1, a first objectively determined cylinder angle Fa1, and a second prescription 36b, including a second subjectively optimized sphere degree fs2, a second objectively determined cylinder degree Fc2, a second objectively determined cylinder angle Fa2, wherein said first prescription 36a is optimized for visual quality and said second prescription 36b is optimized for visual distortion.
In one aspect, the inventive method further comprises having the subject try on lenses based on the generated prescription, with the subject giving a final selection to determine a final eyeglass prescription. When the glasses are tried on, the lenses corresponding to a plurality of optometry lists are put into a glasses frame and are worn on the face of a measured person.
The inventive method overcomes the three aforementioned disadvantages of the conventional optometry methods of fig. 1 and 2.
First, the method of the invention does not rely on the experience of the optometrist to address the problem of lens distortion, and does not in fact allow the optometrist to empirically vary the cylinder power and cylinder axis angle. Second, instead of the traditional prescription method (fig. 1) and the unique prescription from wavefront digital eyeglass prescription (fig. 2), the improved method provides at least two solutions, and the two solutions have different effects on image distortion, allowing the consumer to find the best glasses without distortion, thereby addressing the difference in individual tolerance to distortion. Third, the improved method can provide objective optimization results based on scientific calculations. The difference in cylinder power and cylinder axis angle among the several prescriptions generated is determined objectively based on a range of factors, including but not limited to the following: 1) the power difference of each optometry unit can be accurately calculated by ordinary technicians in the field, lenses with different levels of image distortion are provided, 2) the absolute value of the cylindrical lens power for objectively measuring the ametropia of the human eye is 3) the absolute value of the cylindrical lens power for objectively measuring the ametropia of the human eye is 4) the absolute value of the cylindrical lens shaft angle for objectively measuring the ametropia of the human eye is 5) the relation of the cylindrical lens shaft angles of the left and the right eyes of the same person is 6) the cylindrical lens power and the cylindrical lens angle for wearing old lenses by the tested person in the past.
Further, objective refraction measuring devices are directed to measuring wavefront aberrations of the human eye, including coma and spherical aberrations.
Further, the difference in producing several objective prescriptions is in the cylinder degree or/and the cylinder axis angle.
It may further involve taking into account the measured person's left and right eye refractive data or/and the measured person's past worn old eye refractive data.
More preferably, the final eyeglass prescription further comprises spherical aberration.
Another embodiment of the present invention relates to a system for determining an improvement in eyeglass prescription as shown in fig. 4 configured in accordance with the improvement method of fig. 3. The system comprises: 1) an objective refraction module 41 is provided to visually measure the refractive error of the human eye. The objective refraction device does not depend on subjective feedback of the measured person, and the objective refraction module 41 may be an ocular wave aberrometer for measuring all aberrations of the human eye, including focusing error, cylindrical lens error, spherical aberration and coma. It may also be an improved computer-controlled automatic optometer capable of accurately measuring the focus error and the cylindrical error of the human eye. 2) A calculation module 42 for generating objective prescriptions based on objectively measuring refractive errors of the human eye. In one embodiment, the plurality of objective prescriptions includes at least a first objective prescription 43a including a first objectively determined sphere degree Fs1, a first objectively determined cylinder degree Fc1, a first objectively determined cylinder axis angle Fa1, and a second objective prescription 43b including a second objectively determined sphere degree Fs2, a second objectively determined cylinder degree Fc2, a second objectively determined cylinder axis angle Fa2, wherein the first objective prescription 43a is optimized for visual quality and the second objective prescription 43b is optimized for visual distortion. 3) A optometry module 44 is configured to determine subjectively optimized sphere power from the objective prescriptions generated by the calculation module 42. In one embodiment, the plurality of subjectively optimized sphere power includes at least a first subjectively optimized sphere power fs1 and a second subjectively optimized sphere power fs 2. Optometry unit 44 is comprised of a plurality of spherical and cylindrical lenses and is positioned in front of the eyes of the person being measured for viewing through the lenses selected to correct for focus errors and cylindrical aberrations. The measured person provides the condition that he/she can recognize the words on the visual chart through the lens of the optometry machine, only the sphere power is allowed to be regulated and controlled by the optometry machine, the control of the cylindrical lens in the optometry machine is automatically completed only according to a plurality of objective optometry sheets, and the change of an operator is not allowed. 4) An output module 46 generates a prescription for a plurality of eyeglasses, including at least a first prescription 47 a: including a first subjectively optimized sphere power fs1, a first objectively determined cylinder power Fc1, a first objectively determined cylinder axis angle Fa1, and a second prescription 47 b: including a second subjectively optimized sphere degree fs2, a second objectively determined cylinder degree Fc2, and a second objectively determined cylinder axis angle Fa 2.
Further, the systematic objective refraction measuring device involves measuring wavefront aberrations of the human eye with a lens alignment detector.
The system, producing several objective prescriptions, may differ in the degree of the cylindrical lens, or/and the angle of the cylindrical lens axis. And may involve taking into account the measured person's left and right eye refractive data, or/and the measured person's past wear of old glasses refractive data.
Preferably, the final eyeglass prescription of the system further comprises spherical aberration.
Another embodiment of the present invention is the subsystem of fig. 4, a system for determining an eyeglass prescription improvement system as shown in fig. 5, the system comprising: 1) an objective refraction module 51 is provided to visually measure the refractive error of the human eye. The objective measurement device does not rely on subjective feedback from the measured person, and the objective refraction module 51 may be an ocular wave aberrometer for measuring all aberrations of the human eye, including focus error, cylindrical error, spherical aberration and coma. It may also be an improved computer-controlled automatic optometer capable of accurately measuring the focus error and the cylindrical error of the human eye. 2) A calculation module 52 for generating objective prescriptions based on objectively measuring refractive errors of the human eye. In one embodiment, the plurality of objective prescriptions includes at least a first objective prescription 53a including a first objectively determined sphere degree Fs1, a first objectively determined cylinder degree Fc1, a first objectively determined cylinder axis angle Fa1, and a second objective prescription 53b including a second objectively determined sphere degree Fs2, a second objectively determined cylinder degree Fc2, a second objectively determined cylinder axis angle Fa 2; wherein the first objective prescription 53a is optimized for visual quality and the second objective prescription 53b is optimized for visual distortion.
Further, the difference in producing several objective prescriptions is in the cylinder power, or/and the cylinder axis angle. And may involve taking into account the measured person's left and right eye refractive data, or/and the measured person's past wear of old glasses refractive data.
More preferably, the final eyeglass prescription further comprises spherical aberration.
Preferably, the system may be combined with a optometry module for further subjectively optimizing the sphere power of the objective optotypes generated by the calculation module 52.
Another embodiment of the present invention is the improved subsystem of fig. 4, an improved system for determining an eyeglass prescription as shown in fig. 6. The system comprises: 1) an input device 61 is provided for receiving refractive data of the eye, including at least focus error, cylinder error, and possibly coma and spherical aberration. 2) A calculation module 62 generates a plurality of initial prescriptions based on the received refractive data of the eye. In one embodiment, the number of initial prescriptions includes at least a first initial prescription 63 a: including a first initial sphere power Fs1, a first initial cylinder power Fc1, a first initial cylinder axis angle Fa1, and a second initial prescription 63 b: including a second initial sphere power Fs2, a second initial cylinder power Fc2, and a second initial cylinder axis angle Fa2, wherein said first initial prescription 63a is optimized for visual quality and said second initial prescription 63b is optimized for visual distortion. 3) A optometry module 64 is configured to determine a plurality of subjectively optimized sphere power from the plurality of initial prescription generated by the calculation module 62. In one embodiment, the plurality of subjectively optimized sphere power levels includes at least a first subjectively optimized sphere power level fs 165 a, and a second subjectively optimized sphere power level fs 265 b. A optometric machine 64 is placed in front of the eye of the person to be tested and is viewed through it to correct for focus and cylinder aberrations with different corrective lenses selected. The optometry machine consists of a plurality of spherical lenses and cylindrical lenses, a measured person can recognize characters on an eye chart through a correction lens of the optometry machine, only the spherical lens degree is allowed to be regulated and controlled by an operator, and the control of the cylindrical lenses in the optometry machine is automatically completed only according to a plurality of initial optometry sheets. 4) An output module 66 generates a prescription for a plurality of eyeglasses, including at least a first prescription 67 a: including a first subjectively optimized sphere power fs1, a first initial cylinder power Fc1, a first initial cylinder axis angle Fa1, and a second prescription 67 b: comprises a second subjectively optimized sphere power fs2, a second initial cylinder power Fc2, and a second initial cylinder axis angle Fa2, wherein the first prescription 67a is optimized for visual quality and the second prescription 67b is optimized for visual distortion.
Further, input devices 61 include, but are not limited to: keyboard, touch-sensitive screen and an electronic communication unit for connecting communication with other devices.
Further, the difference in the objective prescription produced by the system may be in the cylinder power, or/and the cylinder axis angle. And may involve taking into account the measured person's left and right eye refractive data, or/and the measured person's past wear of old glasses refractive data.
Preferably, the plurality of eyeglass prescription of the system further comprises spherical aberration.
Another embodiment of the present invention is a system for determining an improved eyeglass prescription as shown in fig. 7. The system comprises: 1) an input device 71 is provided for receiving the human eye refraction data to generate a plurality of initial prescriptions. In one embodiment, the number of initial prescriptions includes at least a first initial prescription 72 a: including a first initial sphere power Fs1, a first initial cylinder power Fc1, a first initial cylinder axis angle Fa1, and a second initial prescription 72 b: including a second initial sphere power Fs2, a second initial cylinder power Fc2, and a second initial cylinder axis angle Fa2, wherein said first initial prescription 72a is optimized for visual quality and said second initial prescription 72b is optimized for visual distortion. 2) A optometry module 73 is arranged to determine a plurality of subjectively optimized sphere power from a plurality of initial optotypes received from the input device 71. In one embodiment, the plurality of subjectively optimized sphere power includes at least a first subjectively optimized sphere power fs 174 a, and a second subjectively optimized sphere power fs 274 b. The optometric machine 73 is placed in front of the eye of the person and is viewed through it by the person being tested, so that the focus offset and the lenticular offset are corrected by the different corrective lenses selected. The optometry machine consists of a plurality of spherical lenses and cylindrical lenses, a measured person can recognize characters on an eye chart through a correction lens of the optometry machine, only the spherical lens degree is allowed to be regulated and controlled by an operator, and the control of the cylindrical lenses in the optometry machine is automatically completed only according to a plurality of initial optometry sheets. 4) An output module 75 generates a prescription for a plurality of eyeglasses, including at least a first prescription 76 a: including a first subjectively optimized sphere power fs1, a first initial cylinder power Fc1, a first initial cylinder axis angle Fa1, and a second prescription 76 b: comprises a second subjectively optimized sphere power fs2, a second initial cylindrical power Fc2 and a second initial cylindrical shaft angle Fa 2; wherein the first prescription 76a is optimized for visual quality and the second prescription 76b is optimized for visual distortion.
Further, input devices 71 include, but are not limited to: keyboard, touch-sensitive screen and an electronic communication unit for connecting communication with other devices.
Further, the system may involve taking into account the measured person's left and right eye refractive data, or/and the measured person's past worn old eye refractive data.
Preferably, the plurality of eyeglass prescriptions of the system further comprises spherical aberration.
Although the present invention has been described with respect to the preferred embodiments, it will be understood by those skilled in the art that various changes in form and details may be made therein without departing from the spirit and scope of the invention as defined by the appended claims.
Claims (34)
1. A process for determining information about a refractive correction system of an eye, comprising the steps of:
measuring the refractive error of the human eye visually with an objective refraction measuring device independent of the subjective feedback of the person being measured;
producing a plurality of objective prescriptions by wherein said objectively measuring refractive error of a human eye produces a plurality of objective prescriptions, wherein the plurality of objective prescriptions includes at least a first objective prescription including a first objectively determined sphere degree Fs1, a first objectively determined cylinder degree Fc1, a first objectively determined cylinder axis angle Fa1, and a second objective prescription including a second objectively determined sphere degree Fs2, a second objectively determined cylinder degree Fc2, a second objectively determined cylinder axis angle Fa 2; wherein said first objective prescription is optimized for visual quality and said second objective prescription is optimized for visual distortion;
determining a plurality of subjectively optimized sphere power degrees through an optometry machine, wherein the plurality of subjectively optimized sphere power degrees at least comprise a first subjectively optimized sphere power fs1 and a second subjectively optimized sphere power fs2, wherein the optometry machine is composed of a plurality of spheres and cylindrical lenses, the control of the cylindrical lenses in the optometry machine is only completed according to the plurality of generated objective optometry sheets, and the subjective optometry requires a measured person to see a visual chart through the optometry machine and provide subjective feedback;
generating a prescription for a plurality of eyeglasses, including at least a first prescription comprising a first subjectively optimized sphere degree fs1, a first objectively determined cylinder degree Fc1, a first objectively determined cylinder axis angle Fa1, and a second prescription comprising a second subjectively optimized sphere degree fs2, a second objectively determined cylinder degree Fc2, a second objectively determined cylinder axis angle Fa 2; wherein said first prescription is for optimizing visual quality and said second prescription is for optimizing visual distortion.
2. The method of claim 1, wherein: the method further comprises the steps of trying on lenses of the optotypes of the plurality of glasses, determining the final optotype of the glasses according to the selection of the measured person, putting the lenses of the trying glasses into a trying spectacle frame according to the selection of the optotypes of the plurality of glasses, and putting the measured person on the face for trying.
3. The method of claim 1, wherein: the objective refraction measuring equipment relates to measuring the wavefront aberration of human eyes, and the wavefront aberration comprises coma aberration and spherical aberration.
4. The method of claim 1, wherein: the difference between the several objective prescriptions generated is the cylinder power.
5. The method of claim 4, wherein: further consider the measured person's left and right eye refractive data or/and the measured person's past worn old glasses refractive data.
6. The method of claim 1, wherein: the difference between the several objective prescriptions generated is the cylinder axis angle.
7. The method of claim 6, wherein: further consider the measured person's left and right eye refractive data or/and the measured person's past worn old glasses refractive data.
8. The method of claim 2, wherein: the prescription for the final eyewear further includes a spherical aberration.
9. A system for determining a refractive correction of an eye, comprising:
an objective optometry module is used for measuring the ametropia of human eyes in a visitor mode, and objective measuring equipment is independent of subjective feedback of a measured person;
a calculation module for producing a plurality of objective prescriptions based on said objective measurements of refractive errors of the human eye, including at least a first objective prescription comprising a first objectively determined sphere degree Fs1, a first objectively determined cylinder degree Fc1 and a first objectively determined cylinder axis angle Fa1, and a second objective prescription comprising a second objectively determined sphere degree Fs2, a second objectively determined cylinder degree Fc2 and a second objectively determined cylinder axis angle Fa 2; wherein said first objective prescription is optimized for visual quality and said second objective prescription is optimized for visual distortion;
a optometry module configured to determine a plurality of subjectively optimized sphere power levels from a plurality of objective optometries generated by said calculation module, including at least a first subjectively optimized sphere power level fs1 and a second subjectively optimized sphere power level fs2, said optometry module comprising a plurality of spheres and a cylindrical lens, control of the cylindrical lens in the optometry module being accomplished only in accordance with said plurality of generated objective optometries, said subjective optometry requiring a person being measured to view a visual acuity chart through the optometry module and provide subjective feedback;
an output module for generating a prescription for a plurality of eyeglasses, including at least a first prescription including a first subjectively optimized sphere degree fs1, a first objectively determined cylinder degree Fc1, a first objectively determined cylinder axis angle Fa1, and a second prescription including a second subjectively optimized sphere degree fs2, a second objectively determined cylinder degree Fc2, a second objectively determined cylinder axis angle Fa 2; wherein said first prescription is for optimizing visual quality and said second prescription is for optimizing visual distortion.
10. The system of claim 9, wherein: the objective refraction module involves measuring the wavefront aberrations of the human eye with a lens alignment probe.
11. The system of claim 9, wherein: the difference between the several objective prescriptions generated is the cylinder power.
12. The system of claim 11, wherein: further consider the measured person's left and right eye refractive data or/and the measured person's past worn old glasses refractive data.
13. The system of claim 9, wherein: the difference between the several objective prescriptions generated is the cylinder axis angle.
14. The system of claim 13, wherein: further consider the measured person's left and right eye refractive data or/and the measured person's past worn old glasses refractive data.
15. The system of claim 9, wherein: the prescription for the plurality of eyeglasses further comprises a spherical aberration.
16. A system for determining a refractive correction of an eye, comprising:
an objective optometry module is used for measuring the ametropia of human eyes in a visitor mode, and objective measuring equipment is independent of subjective feedback of a measured person;
a calculation module for producing a plurality of objective prescriptions based on said objective measurements of refractive errors of the human eye, including at least a first objective prescription comprising a first objectively determined sphere degree Fs1, a first objectively determined cylinder degree Fc1, a first objectively determined cylinder axis angle Fa1, and a second objective prescription comprising a second objectively determined sphere degree Fs2, a second objectively determined cylinder degree Fc2, a second objectively determined cylinder axis angle Fa 2; wherein said first objective prescription is optimized for visual quality and said second objective prescription is optimized for visual distortion.
17. The system of claim 16, wherein: the objective optometry module relates to measuring wavefront deviation of human eyes, including coma and spherical aberration.
18. The system of claim 16, wherein: the difference between the several objective prescriptions generated is the cylinder power.
19. The system of claim 18, wherein: further consider the measured person's left and right eye refractive data or/and the measured person's past worn old glasses refractive data.
20. The system of claim 16, wherein: the difference between the several objective prescriptions generated is the cylinder axis angle.
21. The system of claim 20, wherein: further consider the measured person's left and right eye refractive data or/and the measured person's past worn old glasses refractive data.
22. The system of claim 16, wherein: the prescription for the plurality of eyeglasses further comprises a spherical aberration.
23. The system of claim 16, wherein: the device is further combined with an optometry machine and used for subjectively optimizing the spherical lens degrees of a plurality of objective optometry lists.
24. A system for determining a refractive correction of an eye, comprising:
an input device configured to receive eye refraction data;
a calculation module for generating a plurality of initial optotypes based on the received human eye refractive data, including at least a first initial optotype including a first initial sphere degree Fs1, a first initial cylinder degree Fc1, a first initial cylinder axis angle Fa1, and a second initial optotype including a second initial sphere degree Fs2, a second initial cylinder degree Fc2, a second initial cylinder axis angle Fa 2; wherein said first initial prescription is optimized for visual quality and said second initial prescription is optimized for visual distortion;
a optometry module configured to determine a plurality of subjectively optimized sphere power levels from a plurality of initial optometry orders generated by said calculation module, including at least a first subjectively optimized sphere power level fs1 and a second subjectively optimized sphere power level fs2, said optometry module comprising a plurality of spheres and a cylindrical lens, control of the cylindrical lens in the optometry module being accomplished only in accordance with said plurality of generated initial optometry orders, said subjective optometry requiring a person being measured to view a visual chart through the optometry module and provide subjective feedback;
an output module for generating a prescription for a plurality of eyeglasses, including at least a first prescription including a first subjectively optimized sphere degree fs1, a first objectively determined cylinder degree Fc1, a first objectively determined cylinder axis angle Fa1, and a second prescription including a second subjectively optimized sphere degree fs2, a second objectively determined cylinder degree Fc2, a second objectively determined cylinder axis angle Fa 2; wherein said first prescription is for optimizing visual quality and said second prescription is for optimizing visual distortion.
25. The system of claim 24, wherein: the initial refractive data includes coma and spherical aberration.
26. The system of claim 24, wherein: the difference between the several initial prescription generated is the cylinder power.
27. The system of claim 26, wherein: further consider the measured person's left and right eye refractive data or/and the measured person's past worn old glasses refractive data.
28. The system of claim 24, wherein: the difference between the several objective prescriptions generated is the cylinder axis angle.
29. The system of claim 28, wherein: further consider the measured person's left and right eye refractive data or/and the measured person's past worn old glasses refractive data.
30. The system of claim 24, wherein: the input device includes: the keyboard, the touch screen and the electronic communication unit are used for connecting and communicating with other devices.
31. The system of claim 24, wherein: the prescription for the plurality of eyeglasses further comprises a spherical aberration.
32. A system for determining a refractive correction of an eye, comprising:
an input device configured to receive a plurality of initial prescriptions, including at least a first initial prescription including a first initial sphere power Fs1, a first initial cylinder power Fc1, a first initial cylinder axis angle Fa1, and a second initial prescription including a second initial sphere power Fs2, a second initial cylinder power Fc2, a second initial cylinder axis angle Fa 2; wherein said first initial prescription is optimized for visual quality and said second initial prescription is optimized for visual distortion;
a optometry module configured to determine a plurality of subjectively optimized sphere power levels from a plurality of initial optometry orders received by said input device, including at least a first subjectively optimized sphere power level fs1 and a second subjectively optimized sphere power level fs2, said optometry module comprising a plurality of spheres and a cylindrical lens, said control of the cylindrical lens within the optometry module being accomplished only in accordance with said plurality of generated initial optometry orders, said subjective optometry requiring a person being measured to view a visual chart through the optometry module and provide subjective feedback;
an output module for generating a prescription for a plurality of eyeglasses, including at least a first prescription including a first subjectively optimized sphere degree fs1, a first objectively determined cylinder degree Fc1, a first objectively determined cylinder axis angle Fa1, and a second prescription including a second subjectively optimized sphere degree fs2, a second objectively determined cylinder degree Fc2, a second objectively determined cylinder axis angle Fa 2; wherein said first prescription is for optimizing visual quality and said second prescription is for optimizing visual distortion.
33. The system of claim 32, wherein: the input device includes: the keyboard, the touch screen and the electronic communication unit are used for connecting and communicating with other devices.
34. The system of claim 32, wherein: the prescription for the plurality of eyeglasses further comprises a spherical aberration.
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| CN201610316763.6A CN105769116B (en) | 2016-05-12 | 2016-05-12 | Method and apparatus for determining the optometry of a pair of eye glasses |
| PCT/US2017/030784 WO2017196603A1 (en) | 2016-05-11 | 2017-05-03 | Methods and systems for determining refractive correctons of human eyes for eyeglasses |
| EP17796581.1A EP3454721A4 (en) | 2016-05-11 | 2017-05-03 | Methods and systems for determining refractive correctons of human eyes for eyeglasses |
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| CN201610316763.6A CN105769116B (en) | 2016-05-12 | 2016-05-12 | Method and apparatus for determining the optometry of a pair of eye glasses |
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| KR102397802B1 (en) * | 2016-09-05 | 2022-05-12 | 가부시키가이샤 니데크 | Subjective optometric apparatus and subjective optometric program |
| WO2019014855A1 (en) * | 2017-07-18 | 2019-01-24 | 北京远点明视科技有限公司 | High-precision electronic eyeglasses having variable power |
| CN109497939A (en) * | 2018-12-28 | 2019-03-22 | 杭州精飞光学仪器制造有限公司 | A kind of refraction system and its method |
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| CN102186408A (en) * | 2008-08-15 | 2011-09-14 | 卡尔蔡斯视觉股份有限公司 | System and method for prescription of visual aids |
| CN105378547A (en) * | 2012-11-28 | 2016-03-02 | 完美视觉（香港）有限公司 | Methods and systems for automated measurement of the eyes and delivering of sunglasses and eyeglasses |
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| CN102186408A (en) * | 2008-08-15 | 2011-09-14 | 卡尔蔡斯视觉股份有限公司 | System and method for prescription of visual aids |
| CN105378547A (en) * | 2012-11-28 | 2016-03-02 | 完美视觉（香港）有限公司 | Methods and systems for automated measurement of the eyes and delivering of sunglasses and eyeglasses |
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