JPH0810223A - Ophthalmological appliance - Google Patents

Abstract

PURPOSE:To save the handling time and to shorten a time required for alignment. CONSTITUTION:An inspector adjusts the height of a jaw receiving part 3, and fixes the face of an examinee S with a forehead abutting part and the jaw receiving part. When the inspector inputs the moving position of an eye inspection unit 6 so as to nearly face the lens barrel 6a of the eye inspection unit 6 with the eye set as a target to be measured of the examinee S, the eye inspection unit 6 is moved by operating a triaxial direction driving means 5, and light from a light source for alignment in the inside of the eye inspection unit 6 can be projected on the eye to be inspected via the lens barrel 6a. Reflected light on this part is received by a light receiving means in the inside of the eye inspection unit 6, and dislocation from an aligning position can be detected, and the eye inspection unit 6 is moved so as to correct such dislocation. Aligning position information is fetched in a memory in a main body 4, and furthermore, it is outputted to a printer 8, and alignment can be performed mechanically by inputting the aligning position information to an ophthalmological appliance.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an ophthalmologic instrument having an automatic alignment function, such as a non-contact tonometer, which measures each eye of an eye to be examined.

[0002]

2. Description of the Related Art In a conventional ophthalmologic apparatus having an auto-alignment function, an examiner manually roughly adjusts the position of the optometry unit and the height of the chin rest of the face support unit to adjust the positions of the subject's eye and the optometry unit. When adjusted to a predetermined range, the light receiving means inside the optometry unit will receive the reflected light from the eye to be examined by the alignment light source, and the relative position between the eye to be examined and the optometry unit will be detected. The position of the unit is automatically adjusted.

[0003]

However, in the above-mentioned conventional example, in order to operate the automatic alignment function,
It is necessary for the examiner to manually perform alignment within a certain range in advance. In particular, ophthalmologic instruments equipped with multiple optometry functions such as intraocular pressure measurement and fundus photography have different working distances depending on the purpose of optometry, and the examiner needs to make rough adjustments each time the optometry function is switched. Not only is it time-consuming and labor-intensive, and the burden is imposed on the examiner. During this time, the subject's head is fixed, so the subject is physically burdened.

The object of the present invention is to solve the above-mentioned problems,
An object of the present invention is to provide an ophthalmologic apparatus that shortens the time required for alignment and saves labor to reduce the burden on the examiner and the subject.

[0005]

Means for Solving the Problems An ophthalmologic apparatus according to the present invention for achieving the above object has a recording or storing means for recording or storing information on the state of the ophthalmic apparatus at the time of eye examination, and the same apparatus or When the eye is examined by another ophthalmologic instrument, the ophthalmologic instrument is characterized in having the same state based on the information recorded or stored in the recording or storage means.

[0006]

In the ophthalmologic apparatus having the above-described structure, the same subject is again examined by the same type of instrument by recording or storing the optimum alignment position between the eye to be inspected and the eye examination unit at the time of the first eye examination. At this time, the optometry unit is automatically moved based on the recorded or stored position information.

[0007]

DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be described in detail based on the illustrated embodiments. FIG. 1 is a side view of a first embodiment in which the present invention is applied to a non-contact tonometer, and FIG. 2 is a front view. Fixed base 1
A forehead rest 2 and a chin rest 3 for fixing the face of the subject S are provided in front of the chin rest, and the height of the chin rest 3 can be adjusted from the outside. A main body 4 is provided above the fixed base 1, and an optometry unit 6 that is moved three-dimensionally by a triaxial driving means 5 is placed on the main body 4. Further, on the side surface of the main body 4, there are provided position input means 7 for adjusting the height of the chin rest part 3 and the position of the optometry unit 6 from the outside, and a printer 8 for printing the measurement results and the like on a sheet. The optometry unit 6 indicated by the solid line represents the state immediately after the main power is input, and the optometry unit 6 indicated by the dotted line represents the state after the alignment.

FIG. 3 shows a block circuit configuration diagram of such an automatic alignment mechanism, and this circuit is provided inside the main body 4. The CPU 10 includes a triaxial drive means 5, a printer 8, a position input means 7, and a triaxial drive means 7, which are shown in FIG.
Jaw holder position detecting means 1 for detecting the position of the jaw holder 3
1. Optometry unit position detection means 12 for detecting the position of the optometry unit 6, alignment detection means 13 for detecting a deviation from the alignment position of the optometry unit 6, memory 1
4 are connected.

At the time of eye examination, the examiner inputs the height of the chin rest 3 into the position input means 7 so that the forehead of the subject S contacts the forehead rest 2. The height of the chin rest 3 is adjusted based on this input signal. The examiner brings the forehead and the chin of the subject S into contact with the forehead rest 2 and the chin rest 3, respectively, and fixes the face of the subject S, and then the lens barrel 6a of the detection unit 6 The movement position of the optometry unit 6 is input to the position input means 7 so as to face the subject's eye E to be measured by the subject S. The triaxial drive means 5 is operated based on the input of the position input means 7 to move the optometry unit 6.

The light from the alignment light source inside the optometry unit 6 is projected onto the eye E through the lens barrel 6a, and the reflected light here is received by the light receiving means inside the optometry unit 6. This received light signal is the alignment detection means 1
3, the deviation from the working distance of the optometry unit 6 along the measurement optical path and the deviation of the optometry unit 6 in the plane perpendicular to the measurement optical path are calculated. These pieces of position information are input to the CPU 10 as alignment detection signals. The CPU 10 drives the triaxial driving means 5 based on the alignment detection signal to move the optometry unit 6 and adjust the optometry unit 6 to the position indicated by the dotted line.

When the CPU 10 confirms from the alignment detection signal of the alignment detecting means 13 that the alignment is completed, the CPU 10 fetches the position information of the jaw receiving portion 3 from the jaw receiving portion position detecting means 11 and at the same time the eye examining unit position detecting means 12 After the three-dimensional position information of the optometry unit 6 is fetched and temporarily stored in the memory 14, compressed air is blown from the lens barrel 6a to the subject's eye E to measure the intraocular pressure value.

After the measurement of the eye E to be inspected, the examiner inputs the position information into the position input means 7 so that the other eye and the lens barrel 6a of the optometry unit 6 substantially face each other. The CPU 10 moves the optometry unit 6 based on the input of the position input means 7,
Further, the positions of the other eye and the optometry unit 6 are aligned based on the alignment detection signal of the alignment detection means 13. When the alignment is completed for the other eye, the CPU 1
0 stores the position information of the chin rest 3 and the optometry unit 6 at this time in the memory 14, and then measures the intraocular pressure value for the other eye. When the measurement of both eyes is completed, the CPU 10 converts the alignment position information A stored in the memory 14 into a numerical sequence or a symbol sequence, and prints it together with the measurement data D on the paper by the printer 8.

FIG. 4 is an output example of the printer 8. The measurement result for each time and the average value thereof are measured data D for the left and right eyes.
Alignment position information A displayed as a numerical value column is output below this. In addition to the measurement data D, the printer 8 can output a numerical value sequence or the like representing the alignment position information A.

When the subject S is measured again with the same ophthalmic instrument, the examiner inputs the printed numerical value sequence into the input device 11. The CPU 10 moves the optometry unit 6 to the same position as when the optometry was performed for the first time. As a result, the eye E to be inspected and the eye examination unit 6 are substantially opposed to each other, so that the examiner does not need to perform the rough adjustment in the previous stage for executing the automatic alignment function, so that the time required for the eye examination is shortened.

When the eye is examined by another ophthalmologic apparatus having an automatic alignment mechanism, the examiner inputs the position input means 7
When the numerical sequence of the alignment position information A output from the printer 8 is input to the CPU 8, the CPU 10 corrects the working distance and the difference between the height of the optometry unit 6 and the height of the chin rest 3 becomes the same as the previous optometry. As described above, the triaxial driving means 5 is driven to move the optometry unit 6.

The alignment position information A of the optometry unit 6 and the chin rest 3 at the time of alignment is stored in the memory 14 together with, for example, the chart number and the name of the subject S, or the main body 4 such as a floppy disk or optical card. It may be stored in a storage medium external to the. In this case, if the name or the like of the subject is input through the position input means 7 or the like after the next optometry, C
The PU 10 takes in the alignment position information A stored in the memory 14 or a storage medium outside the main body 4, and moves the optometry unit 6 based on this information.

If the alignment position information A of the chin rest 3 and the optometry unit 6 is stored in a storage medium external to the main body 4, when the optometry is performed by another ophthalmologic apparatus, the external information of the main body 4 is stored. By transferring the information in the storage medium, the above-described auto-alignment function can be executed. Further, the measurement data D and the like can be stored in a storage medium outside the main body 4.

In the present embodiment, the chin rest 3 is made movable. However, the chin rest 3 is fixed and the difference between the height of the optometry unit and the height of the chin rest 3 is stored and based on this memory at the time of the next optometry. You just have to match. Further, the printer 8 may be omitted, and in this case, a numerical sequence representing the alignment position information A may be displayed on a monitor, an LED display device or the like, and the examiner himself may record it on a sheet.

Further, in the present embodiment, the alignment position information A is displayed as a numerical value sequence as shown in FIG. 4, but it can be outputted from the printer 8 together with the measurement data D as a bar code B as shown in FIG. . Thus, when the same subject S is examined again, the examiner only needs to read the barcode B into the CPU 10 with the barcode reader, and the alignment position information can be input, and the examiner can externally enter a numerical value sequence or the like. It is possible to save the trouble of inputting and input is sure.

FIG. 6 is a block diagram of the second embodiment applied to a self-measuring type ophthalmologic apparatus. Inside a housing 21, an optometry unit is three-dimensionally moved by a triaxial driving means 22. 23 is provided, and the forehead support 2 is provided on the front surface of the housing 21.
4. The chin rest 25 is provided, and the lens barrel 23a of the optometry unit 23 is further projected. Further, an external memory loading port 26 for loading a floppy disk, an optical card, etc. is provided on the side surface of the housing 21.

When an examiner loads a storage medium such as a floppy disk or an optical card into the external memory loading port 26, the CPU 1
0 reads the position information of the optometry unit 23 at the time of alignment from this storage medium. This position information is information that stores in advance the position of the optometry unit 23 when the examiner examines the subject S in the ophthalmologic apparatus having the automatic alignment function as shown in FIG.

The CPU inside the housing 21 drives the triaxial driving means 22 based on this position information to move the optometry unit 23. As a result, the eye E to be inspected by the subject S and the lens barrel 23a of the eye examination unit 23 can be substantially opposed to each other, and the eye E to be inspected by the alignment light source.
The reflected light flux at is received by the light receiving element inside the optometry unit 23, and the CPU finely adjusts the position of the optometry unit 23 based on the alignment information obtained from the light receiving position of this light receiving element. Optometry and optometry unit 23
Align with and measure. Similarly, for the other eye, the position of the optometry unit 23 is aligned and the measurement is performed.

As described above, the subject S can align the positions of the eye E to be measured and the eye examination unit 23 only by bringing the face into contact with the forehead rest 24 and the chin rest 25. Even an elderly person or a subject with weak eyesight can easily and surely perform the alignment.

[0024]

As described above, in the ophthalmologic apparatus according to the present invention, the position of the optometry unit at the time of alignment during optometry is set in the recording or storage means.
When optometry is performed after the next time, the optometry unit is automatically moved to the position recorded or stored in the recording or storage means, and it is possible to fit the optometry unit to the position where the auto-alignment means functions. Since the examiner does not need to manually adjust the position of the optometry unit,
The labor of the operation is omitted, the time required for the optometry is shortened, and the burden on both the examiner and the examinee can be reduced.

[Brief description of drawings]

FIG. 1 is a side view of a first embodiment.

FIG. 2 is a front view.

FIG. 3 is a block circuit configuration diagram of an automatic alignment mechanism.

FIG. 4 is an explanatory diagram of an output example of a printer.

FIG. 5 is an explanatory diagram of another output example of the printer.

FIG. 6 is a schematic configuration diagram of a second embodiment.

[Explanation of symbols]

 2, 24 Forehead receiving part 3, 25 Jaw receiving part 4 Main body 5, 22 Triaxial direction driving means 6, 23 Eye examination unit 7 Position input means 8 Printer 10 CPU 11 Jaw rest position detecting means 12 Eye examination unit position detecting means 13 Alignment Detecting means 14 Memory 26 External memory loading port

Claims (2)

[Claims] 1. A recording or storing means for recording or storing information on a state of an ophthalmologic apparatus at the time of eye examination, and when the eye examination is performed by the same apparatus or another ophthalmologic apparatus, recording or storage in the recording or storage means. An ophthalmologic instrument comprising means for bringing the state of the ophthalmologic instrument into the same state based on the information stored therein. 2. The ophthalmologic apparatus according to claim 1, wherein the information of the state recorded or stored in the recording or storage means is three-dimensional position information of the optometry unit in a state of being aligned by auto-alignment. .