JP2953446B2 - Subjective optometer - Google Patents

Description

Description: BACKGROUND OF THE INVENTION [0001] 1. Field of the Invention [0002] The present invention relates to a subjective optometer for measuring an eye refractive power of a subject. 2. Description of the Related Art Conventionally, it has been recognized that a great deal of information is required in an optometry for prescribing spectacles and contact lenses accurately, so that a large amount of information is displayed on a CRT display and optometry. Various functions have been added to the container, and it has become complicated. [0003] In order to realize such many functions, centralized operation and centralized management are required. In order to realize each function of the conventional subjective ophthalmoscope, a dedicated operation switch is provided and operated. Was to do by doing. [0004] However, when a large amount of information is displayed on a display and dedicated operation keys are provided, there is a disadvantage that the operation section must be widened. [0005] In view of the above problems, an object of the present invention is to provide a highly operable subjective ophthalmoscope that meets the demands of centralized management. [0006] The present invention is characterized by having the following configuration in order to solve the above-mentioned problems. (1) In a subjective ophthalmoscope equipped with a target presenting means for presenting a target to the subject's eye and a refractive power providing means for providing a refractive power to the subject's eye, the visual observation is performed according to a predetermined procedure. Program storage means for storing an optometry program for sequentially giving an operation instruction to the target presenting means and the refractive power applying means, progress information for progressing the optometry, optometry results, selection information having a plurality of options, and a cursor for selection a display unit for displaying an input means having a cursor moving means for moving a cursor displayed on a particular dedicated key and the display, which is provided with a function for eye and an execution unit for executing the selection, the progressive
View corresponding to each optometry step to use as information
Storage means for storing a graphic pattern of a mark;
When the optometry program is executed, the current optometry step and
In order for the examiner to recognize the subsequent optometry step,
In the spray unit, as the progress information,
Multiple visual patterns are displayed according to the progress and optometry
Of the optotype corresponding to the current optometry step
Display control means for displaying a display on the traffic pattern ;
Is provided. (2) In a subjective ophthalmoscope equipped with an optotype presenting means for presenting an optotype to the eye to be examined and a refractive power applying means for imparting a refracting power to the eye to be examined, an objective optometry value or an anterior eyeglass measurement value Input means for inputting at least one of the following, a program storage means for storing an optometry program for sequentially giving an operation instruction to the optotype presenting means and the refractive power applying means in accordance with a predetermined optometry procedure, and A display unit for displaying progress information to be performed, an optometry result, selection information having a plurality of options, and a cursor for selection, a dedicated key provided with a specific function for optometry, and moving a cursor displayed on the display An input unit having a cursor moving unit and an executing unit for executing the selection, and the objective optometric value or the anterior spectacle measurement value is displayed on the display unit.
In the same screen of the spray unit,
And control means for displaying in a comparable form . An optometry system apparatus according to an embodiment of the present invention will be described below with reference to the drawings. FIG. 1 is a schematic external view of an optometry system in which various devices necessary for optometry are rationally arranged. On the side of the optometry table 1 of this optometry system apparatus, a control unit 2 having operation switches for advancing the optometry, a CRT display unit 3 which can be moved to the subject side and displays optometry information, a lens It comprises a replaceable motorized ophthalmoscope 4, a control unit 2, and a relay unit 6 for relaying and controlling signals between the interchangeable motorized ophthalmoscope 4 and an automatic eye refractometer (not shown) and an automatic lens meter. A remote control unit 5 for transmitting and receiving infrared signals to and from a visual acuity test apparatus 7 is provided above the motorized ophthalmoscope 4 with interchangeable lenses. The visual acuity testing device 7 is a film running type visual acuity testing device that can be operated by an operation switch in the control unit, and presents various optotypes necessary for optometry to a subject. FIG. 2 is an external view of the control unit 2. The operation switches on the control unit include an auxiliary lens switch group 8 for driving the optical system of the motorized ophthalmoscope 4 having an interchangeable lens, an optometry mode changeover switch group 9,
It is divided into a target switch group 10 for driving the visual acuity inspection device 7 and another function selection switch group 11. The upper left one in the function selection switch group 11
The three switches 2, 13, and 14 are unspecified function switches. Numerals 12 and 13 are so-called cursor moving keys. These two switches are used to move the cursor up, down, left and right to select one of the program menus. In this embodiment, two cursor movement keys are used. However, it is needless to say that four cursor movement keys may be used.
14 is an execution key. FIG. 3 is a block diagram of the entire apparatus. The control unit 20 is a keyboard circuit having a key matrix structure, and determines the switch pressed by the examiner and transmits the switch to the microcomputer circuit 21. In the microcomputer circuit, the signal converted into the character string code is sent to the interchangeable lens-type motorized ophthalmoscope 4, the relay unit 6, and the CRT display 3 via the RS-232C interfaces 29 and 30, respectively. Reference numeral 24 denotes a rotary encoder that changes the power of the optical system of the motorized ophthalmoscope 4 with interchangeable lenses. Reference numeral 25 denotes a subject response switch that allows the subject to respond with a switch, 26 denotes a buzzer, and 27 denotes a dip switch, which are input to a microcomputer circuit via an input / output circuit 28. 31 is a backup battery. The signal converted into a code in the microcomputer circuit 21 of the motorized optometer unit with interchangeable lenses is input to the microcomputer circuit 33 via the RS-232C interface 32, and passes through the input / output circuit 34 and the pulse motor driver 35. Motor 36
Is driven to rotate the weak spherical lens disk 37, the strong spherical lens disk 38, the auxiliary lens disk 39, the cross cylinder disk 40 and the like, and a predetermined optical system is arranged in the optometry window. The relay unit code signal input to the microcomputer circuit 21 is supplied to the RS-232C interface 4.
1 to the microcomputer circuit 42,
The signal passes through the input / output circuit 47 and is modulated by the infrared remote control circuit 46 into an infrared signal. It is sent to an eye test. Also, RS-232C interface 4
8, sent to the CRT display unit 3 via the communication port 49. The RS-232C interface 48 and the communication port 49 can be connected to an auto-ref (automatic eye refractometer) and an auto-lens meter. The optometer can be set by sending the optical system based on the measured data to the optical system 4 as an initial value. The printer 43, the printer circuit 44, and the input / output circuit 45 are for printing the measurement results. A signal transmitted to the CRT display unit 3 through the CRT display unit RS-232C interface 50 is interpreted by the microcomputer circuit 51, and the graphic controller 52 and the character controller 54 read the graphic RAM 53 and the kanji ROM 55, and display the display interface 56. To display graphic patterns and characters on the CRT via. Reference numeral 58 denotes a floppy interface, 59
Is a floppy disk drive. In this embodiment, since all the programs cannot be resident because the capacity of the main memory is small, a method of storing the programs on a floppy disk and transferring and executing the programs as necessary is adopted. The operation of the embodiment having the above configuration will be described below. For convenience, subjective optometry unit,
The description will be divided into three parts: an eyesight test apparatus and a display unit, but only a brief description will be given to portions that are not closely related to the present invention. Signals generated by operating the switches in the subjective optometric unit optometric mode changeover switch group 9, especially the rotary encoder 24, are sent to the motorized optometer 4 with interchangeable lenses via the microcomputer circuit 21. , Pulse motor driver 35
The motor 36 is driven by the
7, strong spherical lens disk 38, auxiliary lens disk 3
By rotating 9 and the like, a predetermined optical system is arranged in the left and right optometry windows. Also, the data from the auto-ref is taken in through the microcomputer circuits 42 and 21, and the optical systems corresponding to the respective values of SPH, CYL, AXIS, and PD of the left and right eyes are arranged in the optometry window. The optometry can also be used as a value. After the initial values are set in this manner, the optometry is performed by operating the rotary encoder 24 and the like with reference to the response of the subject until an optimum visual acuity is obtained. Visual acuity testing device A signal by a switch operation in the optotype switch group 10 is transmitted through the microcomputer circuit 42 and the input / output circuit 47 of the relay unit 6 to the infrared remote control circuit 46 and the infrared LE.
D, the character string code is modulated into a long- and short-pulse light train of infrared light, and transmitted to the back-illuminated film traveling visual acuity inspection device 7. The back-illuminated visual acuity test apparatus receives this light pulse train and reconstructs it into a visual acuity table code signal. The target corresponding to the switch operated by the action of the film running motor and the position detecting photoelectric switch (not shown) is presented. In this embodiment, the optometry procedure is programmed in advance, and when the optometry procedure is performed in accordance with the program, the necessary optotype is presented at the optometry stage without operating the optotype switch. . For example, when the initial value of the ophthalmoscope is set based on the measurement result of the auto reflex,
The kana target of 1.0 is programmed to be presented as the first target. Display Unit In this embodiment, various information is presented on the CRT. That is, the program includes a program related to operation and display of the subjective motorized ophthalmoscope, a program for selecting correction means, an enlightenment program, and the like. First, the contents of the main program will be described. FIG. 4 is a display example of a program relating to operation and display of the subjective motorized ophthalmoscope. In the area 60, the measured value by the ophthalmoscope is displayed, and it is shown that the portion displayed in reverse is operable by the rotary encoder. Reference numeral 61 denotes a result (objective value or anterior spectacle value) of the immediately preceding optometry procedure;
Indicates the type of the auxiliary lens currently in use, and 63 indicates the type of the target presented to the subject. Reference numeral 64 denotes a progression procedure of the subjective optometry using an optotype, and a portion indicated by 65 is the current progression stage. The correction means selection program provides information necessary for an examiner or a subject to select correction means. For example, several types of refractive index and specific gravity are input in advance, and the thickness and weight of the prescription lens can be obtained from the SPH and CYL values of the optometry result. Also, in the eyeglass prescription when there is an abnormal eye position, the distance between the pupil (PD value) of the subject and the distance between the optical centers of the left and right eyeglass lenses may be changed. The PD value, the prism value, and the SPH value Then, the eye position abnormality is corrected by calculating the distance between the left and right lenses based on the so-called Prentice's formula. Further, the distance between the corneal apex and the rear surface of the spectacle lens, that is, the lens power may be finely adjusted depending on the wearing distance,
Only the correction amount near the optometry value can be shown. In the prescription of a contact lens, the base curve and size can be selected based on the average value of the corneal curvature radius in the horizontal direction and the vertical direction.
The theoretical power can be determined by obtaining the SE value converted from the CYL value into the contact lens. Although the types of commercially available contact lenses are limited, the selection can be facilitated by showing only data in the vicinity thereof. The enlightenment program is an enlightenment program for the subject, and displays a cross-sectional view of the human eye, a list of imaging optical path diagrams of refractive errors, and advice on personal life based on the measurement results (FIG. 5). You. In addition, there are programs for customer management and statistical processing. A plurality of programs are routed as shown in FIG.
The menu program is a common jump destination program. Here, the menu is an executable program list. In this embodiment, when the power switch is turned on, the optometry program relating to the operation and display of the optometer can be executed in the route a. moves to the menu program at the root of b _2, moves to optometry program other programs at the root of b _1. c and d indicate routes that do not go through the menu. The microcomputer circuit 21 converts the coded signal of the keyboard circuit when the switch 13 of the control unit is pressed into an ASC11 code string of the alphabet, and the RS-232C interface 30,
Relay unit 6, RS-232C interface 5
The signal is input to the microcomputer circuit 51 via 0. The code string is interpreted by the microcomputer circuit 51, and the cursor (instruction mark) is moved downward or rightward on the CRT 57 screen. The operator confirms this movement with his / her eyes, and presses the switch 13 when further movement is necessary, and presses the EXE switch 14 to execute the selected program. FIG. 7 is a flowchart showing the operation of the unspecified function selection switch (cursor movement key, execution key). Reference numeral 100 denotes movement and display of a cursor key, and 101 denotes a process for setting a program menu corresponding to the cursor key or a program address corresponding to the function. Step 102 determines whether or not the execution switch has been pressed from the control unit. If it is determined that the switch has been pressed, execution is shifted to the program address determined in 101 (103). The present embodiment described above is only one embodiment, and it is obvious to those skilled in the art that the present invention can be modified, and these are also included in the present invention. As described above, according to the present invention, the operation of a complicated subjective ophthalmoscope can be smoothly performed by operating a dedicated key and an unspecified key for operating a cursor on a display. And the optometry can be performed efficiently and accurately. Further, according to the first aspect of the present invention, the contents of the optometry at the next step can be understood at a glance when the optometry program is executed, so that the flow of the optometry can be easily understood, and the optometry currently performed in the entire flow is performed. The meaning can be confirmed and the optometry can be performed with confidence. Furthermore, according to the invention of claim 2, since the objective optometric value or the anterior spectacle measurement value can be confirmed at any time during the subjective optometry, even when the examiner is confused during the subjective optometry, the objective optometric value or Confusion can be minimized with reference to the spectacle measurements.

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a schematic external view of an optometry system in which various devices necessary for optometry are rationally arranged. FIG. 2 is an external view of a control unit. FIG. 3 is a block diagram of the entire apparatus. FIG. 4 is an example of a program on a CRT display screen. FIG. 5 is a block diagram of the entire apparatus on a CRT display screen. FIG. 6 is a diagram illustrating a configuration between programs. FIG. 7 shows an unspecified function selection switch (cursor movement key,
6 is a flowchart showing the operation of an (execute key). [Description of Signs] 2 Control Unit 3 CRT Display Units 12 and 13 Cursor Movement Key 14 Execution Key 53 Graphic RAM 54 Character Controller 55 Kanji ROM 56 Display Interface 58 Floppy Interface 59 Floppy Disk Drive

   ────────────────────────────────────────────────── ─── Continuation of front page       (56) References JP-A-60-179036 (JP, A)                 JP-A-59-80227 (JP, A)                 Shokai Sho 57-165553 (JP, U)                 Shokai Sho 59-176478 (JP, U)

Claims (1)

(57) [Claims] In a subjective ophthalmoscope equipped with a target presenting means for presenting a target to the subject's eye and a refractive power providing means for providing refractive power to the subject's eye, the visual target presenting means and the refraction according to a predetermined procedure. A program storage means for storing an optometry program for sequentially giving an operation instruction to the force applying means, a display unit for displaying progress information for proceeding with optometry, an optometry result, selection information having a plurality of options, and a cursor for selection Input means having a dedicated key provided with a specific function for optometry, a cursor moving means for moving a cursor displayed on a display, and an execution means for executing the selection, and an input means used as the progress information.
Optotype graphics corresponding to each optometry step
Storage means for storing a pattern;
Current optometry step and subsequent optometry steps at line time
The display unit to make the examiner aware of the
The graphic pattern of the target is used as the progress information.
Are displayed according to the progress of the optometry.
Optotype graphic putter corresponding to the current optometry step
And a display control means for displaying a display on the screen . 2. In a subjective ophthalmoscope equipped with a target presenting means for presenting a target to the subject's eye and a refractive power providing means for providing refractive power to the subject's eye, at least one of an objective optometry value or a front glasses measurement value is input. Input means, program storage means for storing an optometry program for sequentially giving an operation instruction to the optotype presenting means and the refractive power applying means in accordance with a predetermined optometry procedure, progress information for proceeding optometry, optometry results A display unit for displaying selection information having a plurality of options and a cursor for selection, a dedicated key provided with a specific function for optometry, a cursor moving means for moving a cursor displayed on the display, and selection thereof Input means having an execution means for executing the objective eye examination value or the anterior eyeglass measurement value on the same screen of the display unit. Visual acuity testing apparatus for optometry value and the control means for displaying in a comparably form, characterized in that the provided.