CN117982323A - Vision correction enhancing method and device for visually impaired patient - Google Patents
Vision correction enhancing method and device for visually impaired patient Download PDFInfo
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- CN117982323A CN117982323A CN202311808806.9A CN202311808806A CN117982323A CN 117982323 A CN117982323 A CN 117982323A CN 202311808806 A CN202311808806 A CN 202311808806A CN 117982323 A CN117982323 A CN 117982323A
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- 230000001771 impaired effect Effects 0.000 title claims abstract description 25
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- 238000005457 optimization Methods 0.000 claims abstract description 13
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- 238000002645 vision therapy Methods 0.000 claims description 6
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- 238000000701 chemical imaging Methods 0.000 claims description 3
- 230000004456 color vision Effects 0.000 claims description 3
- 238000001514 detection method Methods 0.000 claims description 3
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- 210000004556 brain Anatomy 0.000 abstract description 3
- 230000004927 fusion Effects 0.000 abstract description 3
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Abstract
The invention relates to the technical field of vision correction, in particular to a vision correction enhancing method and device for a visually impaired patient. A method of enhancing vision correction in a visually impaired patient comprising the steps of: the human eyes enter the human eye correcting space and face the second light emitting surface of the vibration beam splitter prism; the method comprises the steps of utilizing a projection piece to project an image to a first light incident surface of a vibration beam splitter prism so as to enable the image to be projected in front of human eyes, and utilizing a multi-parameter intelligent optimization algorithm to evaluate and adjust the position and parameters of the vibration beam splitter prism in real time so as to enable the human eyes to obtain a preset vision range; the vibrating mirror is utilized to receive light rays parallel to the direction of the first light incident surface of the vibration beam splitter prism, and deflects the light rays into the second light incident surface of the vibration beam splitter prism. Through the cooperation of the sagittal direction and the meridian direction, a large conical visual field can be obtained by scanning and enters human eyes, and a visual field larger than the normal viewing of a patient is obtained according to the automatic fusion of the brain.
Description
Technical Field
The invention relates to the technical field of vision correction, in particular to a vision correction enhancing method and device for a visually impaired patient.
Background
Due to the influence of ophthalmic diseases or industrial injury and other factors, the vision of some people causes the problem of visual field insufficiency, including limited monocular vision, insufficient binocular vision, uneven binocular vision distribution and the like. When both eyes of a low vision person are limited in view, this may cause the patient's view to become narrow. Assuming an object directly in front of the patient, the low vision person may gradually lose sight of the object as the patient progresses.
Currently, various types of low vision aids exist on the market, which mainly provide a vision aid for low vision users to improve the details and reading ability of identifying target objects. These devices are mainly achieved by increasing the size of the target, which may help the user to some extent improve his daily life and work capacity. The device types mainly include optical vision aids, electronic vision aids, and the like. However, these aids often require an increase in the size of the target during use, which means that the range of views that the user can see is reduced, so they are more suitable for close range operation than for outdoor activities.
Disclosure of Invention
Therefore, the technical problem to be solved by the invention is to overcome the defect that the vision correction device in the prior art can sacrifice the visual field of a user when in use, so as to provide a vision correction enhancing method and device for a visually impaired patient.
In order to solve the above technical problems, the present invention provides a vision correction enhancing method for a visually impaired patient, comprising the following steps:
The human eyes enter the human eye correcting space and face the second light emitting surface of the vibration beam splitter prism;
the method comprises the steps of utilizing a projection piece to project an image to a first light incident surface of a vibration beam splitter prism so as to enable the image to be projected in front of human eyes, and utilizing a multi-parameter intelligent optimization algorithm to evaluate and adjust the position and parameters of the vibration beam splitter prism in real time so as to enable the human eyes to obtain a preset vision range;
The vibrating mirror is utilized to receive light rays parallel to the direction of the first light incident surface of the vibration beam splitter prism, and deflects the light rays into the second light incident surface of the vibration beam splitter prism.
Optionally, after the step of obtaining the preset vision range, the method further comprises:
The aberration of the human eye is modulated on the optical path by the optical modulator until the human eye obtains the best and most comfortable vision and locks the position and parameters of the optical modulator.
Optionally, the human eye includes a left eye and a right eye, and the left eye and the right eye are corrected simultaneously.
Optionally, the projecting the image step includes: a plurality of vision training images are selected and projected according to the requirements of the user.
Optionally, the vision training image comprises a standard vision control chart.
Optionally, the multi-parameter intelligent optimization algorithm includes: the detection and correction of color vision are realized by adopting a multispectral imaging technology.
Optionally, the multi-parameter intelligent optimization algorithm includes: based on the wavefront sensing technology, the optical modulator is utilized to detect and correct high-order and complex aberrations.
Optionally, the multi-parameter intelligent optimization algorithm includes: and an eye movement tracking technology is adopted, and the scanning visual field range and the centering position are actively adjusted according to the eyeball position change of the user.
The invention also provides a vision correction enhancing device and a vision correction enhancing method based on the vision-impaired patient.
The technical scheme of the invention has the following advantages:
1. The method for enhancing vision correction of visually impaired patients provided by the invention comprises the following steps: the human eyes enter the human eye correcting space and face the second light emitting surface of the vibration beam splitter prism; the method comprises the steps of utilizing a projection piece to project an image to a first light incident surface of a vibration beam splitter prism so as to enable the image to be projected in front of human eyes, and utilizing a multi-parameter intelligent optimization algorithm to evaluate and adjust the position and parameters of the vibration beam splitter prism in real time so as to enable the human eyes to obtain a preset vision range; the vibrating mirror is utilized to receive light rays parallel to the direction of the first light incident surface of the vibration beam splitter prism, and deflects the light rays into the second light incident surface of the vibration beam splitter prism.
The position and the parameters of the vibration beam splitting prism are estimated and adjusted in real time by utilizing a multi-parameter intelligent optimization algorithm, so that the human eyes obtain a preset vision range; so that the vibration beam splitter prism position and parameters are kept at optimum. When the vision of a patient is corrected and enhanced, the vibrating mirror is arranged on one side of the vibration beam splitter prism, the vibrating mirror deflects the light on one side of the vibration beam splitter prism by 90 degrees, and then the light enters the human eye through the vibration beam splitter prism by 90 degrees. The vibrating mirror deflects the light which cannot enter the human eye due to the damage of the visual field of the patient on one side of the vibrating beam splitter into the light in the sagittal direction, and then deflects the light into the human eye again through the vibrating beam splitter. The light rays of the part of the vision field reserved after the vision field of the patient is lost directly enter the human eyes through the vibration beam splitting prism. Through the cooperation of the sagittal direction and the meridian direction, a large conical visual field can be obtained by scanning and enters human eyes, and a visual field larger than the normal viewing of a patient is obtained according to the automatic fusion of the brain.
2. The vision correction enhancing method for visually impaired patients provided by the invention utilizes the optical modulator to modulate human eye aberration on the optical path until the human eye obtains the best and most comfortable vision, and locks the position and parameters of the optical modulator. Before formal wearing, the aberration of the human eye is repeatedly modulated by using the spatial light modulator based on the visual response of the human eye until the human eye obtains the best and most comfortable vision, and at the moment, the parameters of the light modulator are fixed, so that the patient always wears the optical modulator, and the optical modulator corrects the aberration when the patient wears the vision correction enhancing device, so that the patient can see clear and comfortable images.
3. The invention provides a vision correction enhancing method for a visually impaired patient, wherein the human eye comprises a left eye and a right eye, and the left eye and the right eye are corrected at the same time. Only one eye of a patient with impaired monocular vision can be corrected, but in the correction process, the correction and compensation are carried out according to the eyes vision, which is used as a reference, of the eyes with impaired vision, so that a better correction effect can be obtained.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings that are needed in the description of the embodiments or the prior art will be briefly described, and it is obvious that the drawings in the description below are some embodiments of the present invention, and other drawings can be obtained according to the drawings without inventive effort for a person skilled in the art.
Fig. 1 is a schematic diagram illustrating the operation of the vision correction enhancing device according to the embodiment of the present invention.
Fig. 2 is a schematic view of a vision correction enhancing device provided in an embodiment of the present invention.
Reference numerals illustrate: 1. vibrating mirror; 2. a vibration beam-splitting prism; 3. an optical modulator; 4. a human eye; 5. a projection objective; 6. a projection member; 7. spectacle legs; 8. a projection housing; 9. and a field view observation frame.
Detailed Description
The following description of the embodiments of the present invention will be made apparent and fully in view of the accompanying drawings, in which some, but not all embodiments of the invention are shown. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
In the description of the present invention, it should be noted that the directions or positional relationships indicated by the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. are based on the directions or positional relationships shown in the drawings, are merely for convenience of describing the present invention and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.
In the description of the present invention, it should be noted that, unless explicitly specified and limited otherwise, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be either fixedly connected, detachably connected, or integrally connected, for example; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the above terms in the present invention will be understood in specific cases by those of ordinary skill in the art.
In addition, the technical features of the different embodiments of the present invention described below may be combined with each other as long as they do not collide with each other.
The embodiment provides a vision correction enhancing method for a visually impaired patient, comprising the following steps:
The human eyes enter the human eye correcting space and are arranged towards the second light emitting surface of the vibration beam splitter prism. The projection piece is utilized to project an image to the first light incident surface of the vibration beam splitter prism, so that the image is projected in front of human eyes, and the position and the parameters of the vibration beam splitter prism are estimated and adjusted in real time by utilizing a multi-parameter intelligent optimization algorithm, so that the human eyes obtain a preset vision range. The vibrating mirror is utilized to receive light rays parallel to the direction of the first light incident surface of the vibration beam splitter prism, and deflects the light rays into the second light incident surface of the vibration beam splitter prism.
After the step of obtaining the preset vision range, the method further comprises the following steps: the aberration of the human eye is modulated on the optical path by the optical modulator until the human eye obtains the best and most comfortable vision and locks the position and parameters of the optical modulator. The human eyes described in this embodiment include a left eye and a right eye, and the left eye and the right eye are corrected simultaneously in the correction process.
The step of projecting an image includes: a plurality of vision training images are selected and projected according to the requirements of the user. The vision training image comprises a standard vision control chart or other homemade vision control charts.
The multi-parameter intelligent optimization algorithm comprises the following steps: the detection and correction of color vision are realized by adopting a multispectral imaging technology. Based on the wavefront sensing technology, the optical modulator is utilized to detect and correct high-order and complex aberrations. And an eye movement tracking technology is adopted, and the scanning visual field range and the centering position are actively adjusted according to the eyeball position change of the user.
As shown in fig. 1 and fig. 2, the present embodiment further provides a vision correction enhancing apparatus, which is based on the vision correction enhancing method for the visually impaired patient provided in the present embodiment. The vision correction enhancing device is provided with two groups of vision correction components, and the two groups of vision correction components are arranged in a mirror symmetry mode and are used for being worn by patients with impaired binocular vision. A vision correction enhancing device for wearing by a patient with impaired monocular vision may be provided with only one set of vision correction components. The vision correction assembly comprises an LED micro-projection screen as a projection member 6, a vibration beam splitter prism 2 and a vibrating mirror 1.
As shown in fig. 1, a projection objective 5 is mounted in the projection direction of the projector 6. The first light emitting surface of the vibration beam splitter prism 2 is arranged towards the projection piece 6, and a correction space for the human eye 4 is reserved on one side of the second light emitting surface of the vibration beam splitter prism 2. The vibrating mirror 1 faces the vibration beam splitter prism 2 and is arranged at an angle with the vibration beam splitter prism 2, the vibrating mirror 1 and the projection piece 6 are respectively arranged at the left side and the right side of the vibration beam splitter prism 2, and the vibrating mirror 1 is suitable for receiving light rays parallel to the direction of the first light incident surface of the vibration beam splitter prism 2 and deflecting the light rays into the second light incident surface of the vibration beam splitter prism 2. The vibrating mirror 1 is rotatably installed around the vertical direction, so that the angle between the vibrating mirror 1 and the beam splitting prism can be adjusted. The included angle between the vibrating mirror 1 and the second light incident surface of the vibration beam splitting prism 2 is adjusted to be 10-80 degrees. When the device leaves the factory, the included angle between the vibrating mirror 1 and the second light incident surface of the vibration splitting prism 2 is set to be 45 degrees, so that the angle of the vibrating mirror 1 can be adjusted later.
In order to correct aberrations of the human eye 4, a light modulator 3 is installed between the vibration beam splitter prism 2 and the human eye 4 correction space. In the two groups of vision correction modules arranged in a mirror-image symmetry manner in the embodiment, a pair of projection pieces 6 arranged in a mirror-image manner are arranged between a pair of vibration beam splitter prisms 2. The pair of projection pieces 6 and the pair of projection objectives 5 are arranged in the projection shell 8, and projection openings are formed in the projection shell 8 towards two sides of the two vibration beam splitting prisms 2. The pair of vibrating mirrors 1 are arranged on two opposite sides of the pair of vibrating beam splitting prisms 2.
In order to be worn by a patient, the vision correction enhancing device in this embodiment is in the form of a frame glasses, specifically, as shown in fig. 2, the frame glasses include a projection housing 8 in the middle, a pair of projection members 6 and a pair of projection objective lenses 5 are fixedly installed in the projection housing 8, a pair of field observation frames 9 are provided on both sides of the projection housing 8, and the spatial light modulator, the vibration beam splitter prism 2 and the vibrating mirror 1 are all installed in the field observation frames 9, so that the human eyes 4 observe an external scene through the field observation frames 9. Wherein the spatial modulator is mounted perpendicular to the viewing axis; the second light-emitting surface of the vibration beam-splitting prism 2 is installed towards the correction space of the human eye 4, and the vibration beam-splitting prism 2 is rotatably installed along the meridian direction through a screw rod, so that the angles of the light-entering surface and the light-emitting surface of the vibration beam-splitting prism 2 can be adjusted, and in order to prevent the screw rod from blocking the view, the screw rod is only abutted and fixed with two sides of the vibration beam-splitting prism 2, and the screw rod does not extend into the vibration beam-splitting prism 2; the vibrating mirror 1 is obliquely arranged on one side of the vibration beam splitter prism 2, and the vibrating mirror 1 is rotatably arranged along the sagittal direction through a screw rod, so that the angle between the vibrating mirror 1 and the vibration beam splitter prism 2 can be adjusted. The angles of the vibration beam splitter prism 2 and the vibration mirror 1 are locked and fixed through nuts after rotating in place. For convenient wearing, the glasses legs 7 are rotatably arranged at two sides of the two visual field observation frames 9.
When the vision correction enhancing device is worn by a patient, the vibrating mirror 1 deflects the light entering the visual field of the human eye 4 of the patient by 90 degrees, then the light enters the spatial light modulator 3 through the vibration beam splitting prism 2 by 90 degrees, and then enters the human eye 4. The vibrating mirror 1 can rotate along the sagittal direction, the vibrating beam splitting prism 2 can rotate along the meridional direction, the meridional direction and the sagittal direction are perpendicular to the visual axis direction, the meridional sagittal direction is perpendicular to each other, a large cone-shaped visual field is obtained by matching high-frequency scanning of the sagittal direction and the meridional direction, and the visual field which is larger than the normal visual field of a patient is obtained according to automatic fusion of the brain and enters the human eyes 4. Before the glasses are worn, the aberration of a patient is corrected by using the spatial light modulator 3, and the specific correction method is as follows: the LED micro-projection screen as the projection piece 6 projects a standard vision reference chart in front of the human eye 4 through the projection objective 5 and the vibration beam splitter prism 2, the aberration of the human eye 4 is repeatedly modulated by the spatial light modulator 3 based on the vision response of the human eye until the human eye 4 obtains the best and most comfortable vision, and at the moment, the parameters of the spatial light modulator 3 are fixed, so that the patient can wear the lens until the next time after the aberration is newly modulated.
It is apparent that the above examples are given by way of illustration only and are not limiting of the embodiments. Other variations or modifications of the above teachings will be apparent to those of ordinary skill in the art. It is not necessary here nor is it exhaustive of all embodiments. While still being apparent from variations or modifications that may be made by those skilled in the art are within the scope of the invention.
Claims (9)
1. A method of enhancing vision correction in a visually impaired patient, comprising the steps of:
The human eyes enter the human eye correcting space and face the second light emitting surface of the vibration beam splitter prism;
the method comprises the steps of utilizing a projection piece to project an image to a first light incident surface of a vibration beam splitter prism so as to enable the image to be projected in front of human eyes, and utilizing a multi-parameter intelligent optimization algorithm to evaluate and adjust the position and parameters of the vibration beam splitter prism in real time so as to enable the human eyes to obtain a preset vision range;
The vibrating mirror is utilized to receive light rays parallel to the direction of the first light incident surface of the vibration beam splitter prism, and deflects the light rays into the second light incident surface of the vibration beam splitter prism.
2. The method of vision correction enhancement for a visually impaired patient according to claim 1, further comprising, after the step of obtaining the predetermined vision range:
The aberration of the human eye is modulated on the optical path by the optical modulator until the human eye obtains the best and most comfortable vision and locks the position and parameters of the optical modulator.
3. The method of enhancing vision correction in a visually impaired patient according to claim 2, wherein the human eye comprises a left eye and a right eye, the left eye and the right eye being corrected simultaneously.
4. A method of vision correction enhancement for a visually impaired patient according to any one of claims 1 to 3, wherein the projecting an image step comprises: a plurality of vision training images are selected and projected according to the requirements of the user.
5. The method of vision correction enhancement for a visually impaired patient according to claim 4, wherein the vision training image comprises a standard vision control chart.
6. A method of vision correction enhancement for a visually impaired patient according to any one of claims 1 to 3, wherein said multi-parameter intelligent optimization algorithm comprises: the detection and correction of color vision are realized by adopting a multispectral imaging technology.
7. A method of vision correction enhancement for a visually impaired patient according to any one of claims 1 to 3, wherein said multi-parameter intelligent optimization algorithm comprises: based on the wavefront sensing technology, the optical modulator is utilized to detect and correct high-order and complex aberrations.
8. A method of vision correction enhancement for a visually impaired patient according to any one of claims 1 to 3, wherein said multi-parameter intelligent optimization algorithm comprises: and an eye movement tracking technology is adopted, and the scanning visual field range and the centering position are actively adjusted according to the eyeball position change of the user.
9. A vision correction enhancing device characterized by a vision correction enhancing method based on the visually impaired patient according to any one of claims 1 to 8.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202311808806.9A CN117982323A (en) | 2023-12-26 | 2023-12-26 | Vision correction enhancing method and device for visually impaired patient |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202311808806.9A CN117982323A (en) | 2023-12-26 | 2023-12-26 | Vision correction enhancing method and device for visually impaired patient |
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| CN117982323A true CN117982323A (en) | 2024-05-07 |
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| CN202311808806.9A Pending CN117982323A (en) | 2023-12-26 | 2023-12-26 | Vision correction enhancing method and device for visually impaired patient |
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| CN (1) | CN117982323A (en) |
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- 2023-12-26 CN CN202311808806.9A patent/CN117982323A/en active Pending
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