JP4481665B2 - Optometry equipment - Google Patents

Description

  The present invention relates to an optometry apparatus that subjectively examines the refractive power of an eye to be examined.

There is known an optometry apparatus that switches and arranges an optical element such as a spherical lens or a cylindrical lens in front of the eye to be examined and subjectively examines the refractive power (visual acuity) of the eye while showing a target to be presented forward. Yes. In such an optometry apparatus, first, an eye to be examined is measured by an objective optometry apparatus to obtain a measurement value (frequency, etc.), and a spherical lens or a cylindrical lens is placed in front of the eye of the test eye based on the measurement value. A combination of optical elements such as these is switched and arranged, and a subjective examination is performed while variously switching the optical elements to obtain a complete correction power for obtaining the highest visual acuity of the subject. Thereafter, the final prescription value of the glasses is determined from the complete correction power according to the examiner's experience and a predetermined method. In addition, when a spectacle user purchases new spectacles, the lens power of the spectacles used in a lens meter or the like is obtained in advance, which is useful for optometry work by a subjective optometry apparatus (Patent Document 1). reference).
JP-A-10-28675

When a spectacle user purchases new spectacles, if the frequency does not change from the previous spectacles, there is no need for further optometry work. However, the determination of whether or not to continue the optometry work based on how much frequency changes conventionally depends on the experience of the examiner, and the determination criteria vary. Also, even if there is no meaning of continuing the optometry work without any frequency change, it is not efficient to perform the same optometry work to the end.
In view of the above problems of the prior art, it is an object of the present invention to provide an optometry apparatus that can efficiently and consciously perform optometry work.

In order to solve the above problems, the present invention is characterized by having the following configuration.
(1) In the optometric apparatus for subjectively eye, the input means and the input lens by the input means for inputting a lens of numerical values including a spherical power and cylindrical power of eyeglasses subject was using Calculates the power difference between the spherical power and the astigmatism power between the power value and the inspected complete correction value, and compares the calculated power difference between the spherical power and the predetermined judgment value set for the spherical power. And comparing means for comparing the calculated power difference of the astigmatism power and a predetermined determination value set for the power of astigmatism, and the power difference of the spherical power and the power difference of the power of astigmatism by the comparison means, respectively. And a notifying means for notifying that the optometry work is unnecessary when it is within the set determination value .
(2) In an optometry apparatus for subjectively performing optometry, the lens power value including the spherical power and the astigmatism power of the glasses used by the subject, the spherical power of the eye measured objectively, and An input means for inputting an objective measurement value including astigmatism power, and a lens power value input by the input means and a spherical power frequency difference and an astigmatism power frequency difference in the objective measurement value are calculated and calculated. Compares the power difference between the spherical power and the predetermined judgment value set for the spherical power, and compares the calculated power difference between the astigmatic power and the predetermined judgment value set for the astigmatic power. And a notifying means for notifying that the optometry work is not required when the spherical power difference and the astigmatic power difference are within the set determination values, respectively. It is characterized by that.
(3) The optometry apparatus according to (2) includes storage means for storing an optometry program for executing a plurality of examination steps for obtaining a complete correction value of the eye to be examined, and execution means for executing the optometry program. And the notification by the notification means is performed before the execution of the inspection step by the execution means .

  According to the present invention, an automatic frequency comparison function for determining whether or not it is necessary to perform a new optometry can be provided, so that a subjective optometry work can be performed efficiently.

Hereinafter, embodiments of the present invention will be described with reference to the drawings. FIG. 1 is a schematic external view of an optometry system including a subjective optometry apparatus according to an embodiment, and FIG. 2 is a main part configuration diagram including a control system.
Reference numeral 1 denotes an optometry apparatus body that subjectively performs a refractive power test on a measurement eye, and includes a pair of left and right lens units 10. Each lens unit 10 is rotatably provided with a plurality of lens disks in which various optical elements are arranged on the same circumference. As the lens disks, a weak spherical lens disk 12, a strong spherical lens disk 13, a first auxiliary lens disk 14, a strong astigmatic lens disk 15, a weak astigmatic lens disk 16, and a second auxiliary lens disk 17 are prepared. The second auxiliary lens disk 17 includes a shielding plate, a red / green filter (R / G), a deflection lens (P135 °, P45 °), a dispersion prism (6 / 10Δ), a Madox lens, and the like. These auxiliary lenses are used, for example, in order to present a predetermined inspection target independently to the left and right eyes during an oblique examination. Each disk also has an opening that contains no optical element such as a lens. Each disk is driven to rotate by motors 12M to 17M, and a correction optical system intended for the inspection window 11 is switched and arranged. Reference numeral 18 denotes a microcomputer unit for performing drive control of the optometry apparatus main body 1.

Reference numeral 2 denotes an optotype presenting apparatus for presenting an inspection target. The lamp 20 is turned on to rotate and drive the target disk 21 and the mask disk 22 to a predetermined position so that a desired inspection target is placed in front of the eye to be examined. Projects onto a screen (not shown). Further, reference numeral 23 shown in FIG. 2 is a microcomputer unit for performing drive control of the optotype presenting apparatus 2.
In this embodiment, a projection-type target presenting device is used, but the present invention is not limited to this. Conventionally used optotype presenting devices such as an illumination type) can be used.

  Reference numeral 3 denotes a controller for operating the optometry apparatus main body 1 and the optotype presenting apparatus 2, and various switch groups described later are arranged. A switch signal from the controller 3 is transmitted to the optometry apparatus main body 1 and the optotype presenting apparatus 2 via the relay unit 4, and the microcomputer units 18 and 23 operate each disk based on the signal transmitted from the controller 3. To control.

  Reference numeral 5 denotes an objective eye refractive power measurement device that measures eye refractive power by projecting a measurement target on the fundus of the eye to be examined and detecting a projected target image of the fundus with a light receiving means. It is a lens meter (not shown in FIG. 1) for measuring characteristics. Objective values and spectacle value data from the eye refractive power measurement device 5 and the lens meter 6 are stored in the memory 7 of the controller 3 via the relay unit 4. In addition to storing data such as objective values and spectacle values, the memory 7 stores, for example, an optometry program for sequentially performing a predetermined optometry work, and for automatically obtaining a prescription value from a complete correction value or spectacle value. Stores various control programs and numerical data necessary for optometry, such as an automatic adjustment program, a determination program for displaying a message for determining whether or not to continue optometry work, and a determination value used for this determination program Yes.

  FIG. 3 is a view of the controller 3 as viewed from above. Reference numeral 31 denotes a liquid crystal display for displaying optometry information. Reference numeral 32 denotes a switch unit that advances a target switch group 33 for presenting a desired target, a mask switch group 34 for applying a predetermined mask to the target, a start switch 35 for program optometry, and a program optometry. Switch 37 for specifying a mode for changing measurement data (S, C, A, etc.), input data designating switch group 38, various parameter setting mode, optometry work program writing mode, etc. For example, a setting switch group 39, a function switch group 40, a measuring eye designation switch 41, a dial switch 42 used for changing a measured value or inputting a numerical value are provided. Next to the left and right of the dial switch 42, semi-automatic adjustment switches 43a and 43b are provided for fine adjustment after the prescription value is obtained from the complete correction value or the spectacle value by automatic adjustment.

  The setting changeover switch group 39 includes a menu switch for displaying each setting mode menu, a selection switch for selecting the setting mode menu, and an execution switch for determining the setting mode menu. The function switch group 40 is used when selecting an arbitrary item from various selection items displayed at a predetermined position below the screen of the display 31.

The operation of the apparatus configured as described above will be described with reference to the flowchart of FIG. In addition, the operation | movement which performs optometry automatically based on an optometry program is demonstrated on the assumption that the subject shown to this embodiment is a subject who has conventionally used spectacles.
Before performing the subjective optometry of the eye to be examined, the examiner sets the determination value (C) used for the above-described determination program. In order to set the determination value, the examiner arbitrarily sets the determination value (C) used in the above-described determination program by using the menu switch, selection switch, and execution switch of the setting changeover switch group 39 of the controller 3 shown in FIG. A judgment value setting mode screen for setting is called on the display 31. FIG. 5 is a diagram illustrating an example of the determination value setting mode screen displayed on the display 31. In this embodiment, it is assumed that determination values can be set for two types of parameters, spherical power and astigmatic power.

The examiner selects each parameter using the selection switch of the setting changeover switch group 39 and sets the determination value (C) using the dial switch 42 of the controller 3. The determination value (C) can be set to any numerical value from 0D to 2.00D (diopter) for each of the spherical refractive power and the astigmatic power. In this embodiment, the settable range of the determination value (C) is set to 0D to 2.00D. However, the present invention is not limited to this, and a range that can be used as the determination value may be set as the settable range. Further, the parameters used as determination values in the present embodiment are two types, spherical power and astigmatism power, but are not limited to this. For example, an astigmatic axis angle may be added as a parameter used as a determination value. .
When the determination values (C) for the spherical power and the astigmatism power are set, the determination values of the respective parameters are confirmed using the execution button of the setting changeover switch group 39, and the determination value setting mode screen is exited. In the present embodiment, both the spherical power and the astigmatic power determination value (C) are set to 0.50D.

  Next, the examiner presses the start switch 35 of the controller 3 to execute the optometry program, and the subject's eye measurement measurement data and the subject are using the input data designation switch group 38 of the controller 3. The eyeglass lens data is input to the optometer. The objective measurement data is measured in advance by using the objective eye refractive power measuring device 5 shown in FIG. 1 and the relay unit 4 using the data output switch of the objective eye refractive power measuring device 5. The objective measurement data (spherical power, astigmatism power, astigmatic axis angle, etc.) of the eye to be examined is stored in a memory (not shown). Further, the lens data (spherical power, astigmatism power, astigmatism axis angle, etc.) of the glasses used by the subject before is measured by the lens meter shown in FIG. Remember. The examiner uses the input data designation switch group 38 of the controller 3 to input the objective measurement data and the spectacle lens measurement data stored in the relay unit 4 to the controller 3 side and store them in the memory 7.

  When the microcomputer unit 30 of the controller 3 shown in FIG. 3 acquires the objective measurement data and the spectacle lens measurement data, the microcomputer unit 30 executes the determination program, and the measurement value difference between the spherical powers and the astigmatism powers between the two measurement data. Each measured value difference (absolute value ΔA) is calculated. Next, the microcomputer unit 30 calculates the measured value difference between the calculated spherical powers, the measured value difference between the astigmatic powers (ΔA), and the determination value (C) for the previously set spherical power and astigmatic power, respectively. Compare. The microcomputer unit 30 continues the optometry work if the measured value difference (ΔA) is larger than the determination value (C) in either one of the spherical power and the astigmatic power for both eyes. If the measured value difference (ΔA) is within the determination value (C) for both eyes, the microcomputer unit 30 determines whether or not to continue the optometry work on the display 31, as shown in FIG. Display (notify) the message “Do you want to optometry?” Near the center of the screen. Further, the microcomputer unit 30 displays the measurement data and the spectacle lens measurement data obtained objectively for the left and right eyes together with a message 31 so that the examiner can easily compare both measurement values (objective and spectacle data). On the screen. It should be noted that selection items “high” and “no” are displayed at the bottom of the screen of the display 31 shown in FIG. 6A as correspondences to the displayed messages.

  The examiner looks at this message display screen and determines whether or not to continue the optometry work. When continuing the optometry work as it is, the function switch corresponding to the selection item “high” is pressed, and when the optometry work is ended here, the function switch corresponding to the selection item “No” is pressed. When the selection item “high” is designated, the microcomputer unit 30 continues to execute the optometry program and drives and controls the optometry apparatus so as to perform the optometry work according to the optometry program. When the selection item “No” is specified, the microcomputer unit 30 ends the optometry operation by the optometry program and uses the spectacle lens measurement value obtained by the lens meter as the final prescription value by the current optometry. Are stored in the memory 7 and displayed on the display 31.

  When the selection item “high” is designated and the optometry work is continued, the microcomputer 30 drives and controls the optometry apparatus main body 1 and the optotype presenting apparatus 2 according to the use of the optometry program and the controller 3 of the examiner. The inspection step in the optometry program starts from the naked eye acuity inspection step, and then, by pushing the feed switch 36, the spectacle eye acuity inspection step by wearing the front spectacles, the subjective inspection step (red green (R / G) inspection step, astigmatism) Axis inspection step, astigmatism power inspection step, R / G inspection step, visual acuity inspection step, etc.) in this order.

  In the naked-eye visual acuity test step, the test target having a predetermined visual acuity value is presented by the visual target presenting apparatus 2, and the examiner changes the presented visual target using the visual target switch group 33 and the mask switch group 34. Thus, the naked eye vision of the subject is obtained. In this case, each of the left and right eyes may be examined with the optometry apparatus main body 1 removed from the front of the eye to be examined. Alternatively, the left and right eyes may be examined by opening one of the examination windows 11 and shielding the other. Also good. In the spectacle eyesight inspection step, an optical element corresponding to the spectacle lens measurement data stored in the memory 7 is placed in the inspection window 11 of the lens unit 10, and the same inspection as in the naked eye acuity inspection step is performed. Obtain the subject's visual acuity during use. In the subjective examination step, either objective measurement data or spectacle lens measurement data is selected as an initial value, and an optical element corresponding to the selected data (objective measurement data or spectacle lens measurement data) is selected as the lens unit 10. The eye is subjected to a visual acuity test to obtain a subjective complete correction value of the eye to be examined.

  When the complete correction value (awareness value) of the eye to be examined is determined by the subjective examination step, the microcomputer unit 30 executes the determination program, and the spectacle lens measurement data and the complete correction value (awareness value) previously stored in the memory 7. The measured value difference between the spherical powers and the measured value difference (absolute value ΔB) between the astigmatic powers are respectively calculated. The microcomputer unit 30 compares the calculated measurement value difference between the spherical powers and the measurement value difference (ΔB) between the astigmatism powers with the previously set determination value (C) of the spherical power and the astigmatism power. Next, the microcomputer unit 30 continues the optometry work (automatic adjustment) if the measured value difference (ΔB) is larger than the determination value (C) in either one of the spherical power and the astigmatic power for both eyes. Shall.

  If the measured value difference (ΔB) is within the determination value (C) for both eyes, the microcomputer unit 30 determines whether or not to continue the optometry work on the display 31 as shown in FIG. The message “Do you want to obtain the prescription value?” Is displayed (notified) near the center of the screen. Further, as described above, the microcomputer unit 30 sends the measurement data and the spectacle lens measurement data obtained by the left and right eyes in a message so that the examiner can easily compare both measurement values (objective and spectacle data). At the same time, it is displayed on the screen of the display 31, and selection items “high” and “no” are displayed at the bottom of the screen as a response to the displayed message.

  The examiner looks at this message display screen and determines whether or not to continue the optometry work. When the selection item “high” is designated, the microcomputer unit 30 executes an automatic adjustment program and determines a lens prescription value for eyeglass production. When the selection item “No” is specified, the microcomputer unit 30 ends the optometry operation, and stores the spectacle lens measurement value obtained by the lens meter as a final prescription value by the current optometry. 7 and displayed on the display 31.

When the selection item “high” is designated and the optometry work continues, the microcomputer 30 determines the lens prescription value based on the automatic adjustment program. The lens prescription value is determined by taking into account the spectacle lens measurement data (front spectacle value), pre-input application ability (age), astigmatism, hyperopia / myopia, astigmatism, etc. Is done.
Thereafter, an optical element is arranged in the inspection window of the lens unit 10 based on the obtained lens prescription value, and the final appearance of the subject is confirmed. Fine adjustment of the appearance is performed by the semi-automatic adjustment switches 43a and 43b, and the final prescription value is determined. Thereafter, if necessary, the near vision is confirmed, a wearing test is performed with a temporary frame, and the optometry work is completed.
In the present embodiment, when the selection item “high” is specified and the optometry work is continued, the lens prescription value is automatically obtained using the automatic adjustment program. However, the present invention is not limited to this. By using the switch unit 32 of the controller 3, the lens prescription value can be obtained manually.

  As shown in this embodiment, whether the objective value or the difference between the subjective value and the spectacle lens measurement value is automatically compared with a preset determination value, and whether or not to continue the optometry work based on the comparison result By displaying a message for making such a determination, it is possible to obtain a timing for determining whether or not to continue the optometry work. As a result, even an inexperienced examiner can efficiently perform subjective optometry.

  Also, a message indicating that the difference between the objective measurement data and the spectacle measurement data and the difference between the subjective value and the spectacle measurement data are compared with a predetermined determination value, and the optometry work is continued based on the result. However, only one of the difference between the objective measurement data and the spectacle measurement data or the difference between the subjective value and the spectacle measurement data can be compared with the determination value.

Furthermore, in this embodiment, before performing the automatic adjustment for obtaining the final prescription value, the measured value difference (ΔB) between the spectacle measured value and the subjective value is compared with the previously set determination value (C). If the measured value (ΔB) is larger than the determination value (C), the message is displayed. However, the present invention is not limited to this. For example, if the measured value (ΔB) is within the determination value (C), the optometry work is terminated as it is, and if the measured value (ΔB) is larger than the determination value (C), a message may be displayed. . In this case, by displaying this message, the examiner can be aware that the measured value difference between the spectacle measurement value and the subjective value is larger than the set determination value. As a result, the optometry should be re-performed before automatic adjustment, the prescription value is not calculated and the prescription is kept as it was before, the automatic adjustment is performed to obtain a new prescription value, etc. Judgment can be made.
Further, the message shown in the present embodiment is displayed to assist the examiner in determining whether or not to continue the optometry work, and even if the message content is other than the wording shown in the present embodiment. Good.

1 is a schematic external view showing an optometry system including a subjective optometry apparatus in the present embodiment. It is the block diagram which showed the system control system of the optometry system in this embodiment. It is the figure which showed the detail of the controller. It is the flowchart which showed the flow of the test | inspection of the optometry apparatus in this embodiment. It is the figure which showed the judgment value setting mode screen which sets a judgment value. It is the figure which showed the example which displayed the message on the display screen.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Optometry apparatus main body 2 Visual target presentation apparatus 3 Controller 4 Relay unit 5 Objective eye refractive power measuring apparatus 6 Lens meter 10 Lens chamber unit 18 Microcomputer part 31 Display 32 Switch part

Claims (3)

The eye examination apparatus for consciously eye, comprising: input means for inputting lens of numerical values including spherical power and cylindrical power of eyeglasses subject was using a lens of numerical value entered by the input means While calculating the power difference of the spherical power and the power difference of the astigmatism power in the inspected complete correction value, and comparing the calculated power difference of the spherical power and a predetermined determination value set for the spherical power, Comparison means for comparing the calculated power difference of the astigmatism power and a predetermined determination value set for the power of the astigmatism, and the power difference of the spherical power and the power difference of the astigmatism power by the comparison means are respectively set. An optometry apparatus comprising: notification means for notifying that optometry work is not required when the value is within the determination value . In an optometry apparatus for subjectively performing optometry, the lens power value including the spherical power and the astigmatism power of the spectacles used by the subject, and the spherical power and astigmatism power of the eye measured objectively An input means for inputting an objective measurement value, and calculating a spherical power and a astigmatism power difference between the lens power value input by the input means and the objective measurement value, and the calculated spherical power Comparing means for comparing the power difference and a predetermined determination value set for the spherical power, and comparing the calculated power difference of the astigmatic power and a predetermined determination value set for the astigmatic power And a notifying means for notifying that the optometry work is not required when the spherical power difference and the astigmatic power difference are within the set determination values, respectively. Optometry device. The optometry apparatus according to claim 2 includes storage means for storing an optometry program for executing a plurality of examination steps for obtaining a complete correction value of the eye to be examined, and execution means for executing the optometry program. The notification by the notification unit is performed before the execution of the examination step by the execution unit.

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