JP4164199B2 - Ophthalmic measuring device - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to an ophthalmologic measurement apparatus that measures ophthalmologic characteristics such as eye refractive power inherent to an eye to be examined.
[0002]
[Prior art]
Conventionally, an ophthalmologic measurement apparatus obtains specific information of an eye to be examined such as eye refractive power, intraocular pressure, fundus image, and fundus blood flow by aligning the test measurement means with the eye to be examined while observing the eye to be examined. Yes. In these ophthalmologic measurement devices, when aligning the test measurement means and the eye to be examined, the examiner operates the operation means while observing the anterior segment image of the eye to be examined displayed on the television monitor. After roughly adjusting the position of the measuring means and the eye to be examined, precise positioning is performed using the cornea reflection image of the index beam projected onto the cornea of the eye to be examined. It is complicated and requires work.
[0003]
For this reason, recently, the operator operates the operation means while observing the anterior segment image of the eye to be examined on the television monitor, and the eye to be examined enters almost the center of the observation visual field so that the device and the eye to be operated are operated. An ophthalmic measuring apparatus is disclosed that automatically detects a cornea reflection image when the distance falls within a predetermined range, controls an electric mount to move an inspection means, and automatically performs precise positioning. Furthermore, an ophthalmic measuring apparatus that detects the approximate position of the eye to be examined from the anterior ocular segment image obtained photoelectrically, and automatically adjusts the initial position of the examination measuring means and the eye to be examined by controlling the electric mount Has also been proposed.
[0004]
[Problems to be solved by the invention]
However, the above-described conventional ophthalmic measurement apparatus has a problem in that reflected light from the cornea of the eye to be inspected cannot be received if the initial positions of the test measurement means and the eye to be inspected are greatly shifted. In order to make it possible to receive the corneal reflection light even in such a state, a bright objective lens must be used, so that the apparatus becomes larger and the cost becomes higher. In addition, in a device that detects the pupil position from the anterior segment image of the eye to be examined without using the corneal reflection light and controls the electric mount based on this, the center of the pupil and the corneal center are deviated. In the case of an eye to be examined, there is a problem that the reflected light from the cornea cannot be received even if the initial position is aligned with the center of the pupil.
[0005]
An object of the present invention is to eliminate the above-mentioned problems and perform an accurate alignment from initial alignment to fine adjustment of an eye examination measuring unit and an eye to be examined without requiring operator skill. The object is to provide an ophthalmic measuring apparatus.
[0006]
[Means for Solving the Problems]
To achieve the above object, an ophthalmologic measurement apparatus according to the present invention irradiates a subject with a measurement light beam and measures a state of the subject's eye based on the reflected light, and the measurement unit includes the subject. A driving means for driving for alignment with the optometry, a projection means for projecting a light beam for alignment onto the cornea of the eye to be examined, a light receiving means for receiving the light flux of the projection means reflected from the cornea, and an eye to be examined Left and right eye detection means for detecting left eye or right eye, and when the corneal reflected light of the light flux of the projection means is not detected by the light receiving means, the direction in accordance with the detection information detected by the left and right eye detection means Drive control means for driving the drive means.
[0007]
Further, the ophthalmologic measurement apparatus according to the present invention is an anterior ocular segment image including a measuring means for irradiating a subject's eye with a measurement light beam and measuring the state of the subject's eye based on the reflected light, and a pupil portion of the subject's eye. From the cornea, the driving means for driving the measuring means and the imaging means for alignment with the eye to be examined, the projection means for projecting the alignment light beam onto the cornea of the eye to be examined, and the cornea A light deflector that divides the reflected light flux of the projection means and deflects the light beams in different directions and guides them to the imaging means, and pupil information detected by the imaging means or the cornea reflected by the projection means An ophthalmologic measurement device that drives the driving means based on reflected light, wherein left and right eye detecting means for detecting whether the eye to be examined is a left eye or a right eye; and the corneal reflected light of the light flux of the projection means is detected by the imaging means When it is not, and having a drive control means for driving said drive means in a direction corresponding to the detection information detected by the left and right eyes detecting means.
[0008]
DETAILED DESCRIPTION OF THE INVENTION
The present invention will be described in detail based on the embodiments shown in the drawings.
FIG. 1 is a configuration diagram of an ophthalmologic measuring apparatus according to a first embodiment, in which a dichroic mirror 1 is disposed to be inclined so as to face an eye to be examined E, and at an off-axis position between the eye to be examined E and the dichroic mirror 1. An anterior ocular segment illumination light source 2 such as an LED that emits near infrared light for illuminating the anterior segment of the eye E is disposed.
[0009]
On the optical path O <b> 1 in the transmission direction of the dichroic mirror 1, the wavelength is larger than that of the objective lens 3 for measuring eye refractive power, the perforated mirror 4, the projection diaphragm 5, the projection lens 6, the index plate 7, and the anterior eye illumination light source 2. Measuring light sources 8 that emit near-infrared light having a length of several tens of nanometers are sequentially arranged. The dichroic mirror 1 has a characteristic of transmitting most of the wavelength light emitted from the measurement light source 8 and reflecting a part thereof and reflecting the wavelength light emitted from the illumination light source 2. The members from the measurement objective lens 3 to the measurement light source 8 constitute an eye refractive power measurement light projection optical system that irradiates the eye with a measurement light beam. As will be described later, in this embodiment, the measurement light projection optical system is also used as means for projecting a light beam for alignment on the eye cornea to be examined.
[0010]
In addition, in the reflection direction of the perforated mirror 4, a six-hole stop 9 having six openings outside the optical axis is disposed, and an imaging element 12 such as a six-divided prism 10, a relay lens 11, and a CCD camera is disposed behind the aperture. They are arranged sequentially. The measurement objective lens 3 and the image sensor 12 constitute an eye refractive power measurement light receiving optical system. And the measurement means for measuring an eye state to be examined is comprised by the previous measurement light projection optical system and this measurement light reception optical system.
[0011]
In the reflection direction of the dichroic mirror 1, an anterior ocular segment observation objective lens 13 and a dichroic mirror 14 having a characteristic of transmitting visible light and reflecting near-infrared light are disposed. An optical path O2 in the reflection direction of the dichroic mirror 14 is disposed. Above, a three-hole aperture plate 16 having three openings 16a, 16b, 16c to which wedge prisms 15a, 15b are bonded is detachably arranged in the optical path O2, as shown in FIG. An imaging lens 17 and a light receiving element such as a CCD camera or an image pickup device 18 for picking up an anterior eye portion including a pupil portion that is substantially conjugate with the vicinity of the anterior eye portion of the eye E to be examined are arranged. The members from the observation objective lens 13 to the image sensor 18 constitute an anterior ocular segment observation optical system.
[0012]
Here, the wedge prisms 15a and 15b are vapor-deposited with a multilayer film having a characteristic of transmitting the wavelength light emitted from the measurement light source 8 and reflecting the wavelength light emitted from the illumination light source 2. The wedge prism 15a has three holes. The wedge prism 15b has a function of deflecting the light beam passing through the opening 16a of the diaphragm plate 16 in the back direction with respect to the paper surface, and the light beam passing through the opening portion 16b of the three-hole diaphragm plate 16 in the forward direction with respect to the paper surface. is doing. Thus, the corneal reflected light from the measurement light source 8 is deflected in different directions and reaches the image sensor 18.
[0013]
On the optical path 03 in the transmission direction of the dichroic mirror 14, a known fixation target projection optical system 20 for fixing the mirror 19 and the eye E to be examined is disposed. The anterior ocular segment observation optical system, the fixation target projection optical system 20, the measurement light projection optical system, the measurement light receiving optical system, and the like constitute an eye inspection means, and this eye inspection means is a driving means (not shown). It is placed on an electric mount that can move in three axial directions by an electric motor or the like.
[0014]
The outputs of the image sensor 12 and the image sensor 18 are connected to an A / D converter 21 and an A / D converter 22, respectively, and the outputs of the A / D converter 21 and the A / D converter 22 are stored in a storage means 23, respectively. And an arithmetic processing unit 25 that controls the entire apparatus. The output of the arithmetic processing unit 25 is output from the alignment means 26 which is electrically attached to the electric mount and the alignment means 26 which electrically moves the eye examination means in three axial directions by the measurement light source 8 and driving means such as a motor. By detecting the position, it is connected to a left / right eye detection means 27 comprising a micro switch or the like for detecting the left / right of the eye E. The output of the operation unit 28 for starting measurement and manually controlling the alignment means 26 is connected to the arithmetic processing unit 25, and the output of the arithmetic processing unit 25 is connected to the television monitor 30 via the D / A converter 29. It is connected to the.
[0015]
In such a configuration, when the eye E is illuminated by the illumination light source 2, the reflected and scattered light from the vicinity of the anterior eye portion of the eye E is reflected by the dichroic mirror 1 and is substantially parallel by the observation objective lens 13. Then, the light is reflected from the dichroic mirror 14, passes through the opening 16 c of the three-hole aperture plate 16, and forms an image on the image sensor 18 such as a CCD camera by the imaging lens 17. The output signal of the image sensor 18 is converted into a digital signal by the A / D converter 21, and the anterior segment image E ′ is displayed on the television monitor 30 via the arithmetic processing unit 25 and the D / A converter 29.
[0016]
While looking at the anterior segment image E ′ on the television monitor 30, the examiner moves the subject's eye examination means in the three directions of up / down, left / right, and front / rear using the electric mount operation switch provided on the operation unit 28. Alignment with optometry E is performed.
[0017]
When the rough alignment between the eye E and the eye inspection means is completed, the light beam emitted from the measurement light source 8 illuminates the index plate 7, and the light beam limited by the index plate 7 is projected to the projection lens 6 and the projection diaphragm 5. Through the hole portion of the perforated mirror 4, an image is once formed on the focal plane of the measuring objective lens 3 to be parallel light, and most of the light passes through the dichroic mirror 1 and reaches the eye E to be examined.
[0018]
A part of the light beam reflected by the cornea Ec of the eye E is reflected by the dichroic mirror 1, is made substantially parallel light by the observation objective lens 13, is deflected to the optical path O 2 by the dichroic mirror 14, and is a wedge prism 15 a, 15b passes through the three openings 16a, 16b and 16c of the three-hole aperture plate 16 and is divided into three light beams La, Lb and Lc, and is imaged on the image sensor 18 by the imaging lens 17, The index images 16a ′, 16b ′, and 16c ′ are displayed on the television monitor 30, respectively.
[0019]
As shown in FIGS. 3 to 5, the wedge prism 15 a has a light beam La passing through the opening 16 a of the three-hole aperture plate 16 in the back direction with respect to the paper surface, and the wedge prism 15 b has an opening 16 b of the three-hole aperture plate 16. The light beam Lb passing through is deflected in the forward direction with respect to the paper surface.
[0020]
Therefore, when the working distance between the eye E and the eye inspection means is correct as shown in FIG. 3A, the light flux from the index plate 7 reflected by the cornea Ec of the eye E is the observation objective lens. 13, the index images 16a ′, 16b ′ and 16c ′ projected on the television monitor 30 are arranged in a straight line in the horizontal direction as shown in FIG. 3 (b). At this time, the index image 16c ′ indicates the corneal apex position.
[0021]
Further, as shown in FIG. 4 (a), when the distance between the eye E and the eye inspection means is closer than the correct working distance, the light flux from the index plate 7 reflected by the cornea Ec is the observation objective. Since the light is diffused by the lens 13, as shown in FIG. 4B, the index images 16a ′, 16b ′, and 16c ′ projected on the television monitor 30 are such that the index image 16a ′ is higher than the index image 16c ′. In addition, the index image 16b ′ is arranged linearly below the index image 16c ′, and the index image 16c ′ appears at the corneal apex position.
[0022]
Further, as shown in FIG. 5 (a), when the distance between the eye E and the eye inspection means is longer than the correct working distance, the light flux from the index plate 7 reflected by the cornea Ec is the observation objective. Since the convergent light is generated by the lens 13, the index images 16a ′, 16b ′, and 16c ′ projected on the television monitor 30 as shown in FIG. 5B are lower than the index image 16c ′. In addition, the index image 16b ′ is arranged linearly above the index image 16c ′, and the index image 16c ′ appears at the corneal apex position.
[0023]
As a result, the examiner detects the relative position between the eye E and the eye inspection means from the positional relationship between the index images 16a ′, 16b ′, and 16c ′ displayed on the television monitor 30, and thus the precise position is detected. Can be combined.
[0024]
When the examiner presses the measurement start switch of the operation unit 28 after the alignment is completed, the arithmetic processing unit 25 emits the measurement light source 8. The light beam emitted from the measurement light source 8 reaches the eye E through the index plate 7, the projection lens 6, the projection aperture 5, the hole of the perforated mirror 4, the measurement objective lens 3, and the dichroic mirror 1, and the fundus Ea An index image 7 'is formed on Most of the light beam reflected and scattered by using the index image 7 ′ as a secondary light source passes through the dichroic mirror 1, is reflected by the perforated mirror 4 through the measurement objective lens 3, and is divided into six beams by the six-hole aperture 9. After being divided into luminous fluxes, six spot images are formed on the image sensor 12 via the six-dividing prism 10 and the relay lens 11.
[0025]
This video signal is converted into a digital signal by the A / D converter 22 and stored in the storage means 24. The arithmetic processing unit 25 calculates the eye refractive power of the eye E from the information stored in the storage unit 24, and controls the fixation target projection optical system 20 on the optical path O3 to prompt the subject to fog. By performing this operation several times, it is possible to measure the eye refractive power of the subject eye E in a cloudy state without adjustment.
[0026]
Although the human eye varies depending on individual differences and pathological factors, the corneal apex is decentered with respect to the pupil center in most of the examined eyes E. In particular, the corneal apex is decentered toward the ear with respect to the pupil center in both the left and right eyes. It is known that there is a tendency to. That is, the pupil center and the corneal apex of the human eye do not necessarily coincide with each other, and the corneal apex is eccentric to the ear side with respect to the pupil center. Therefore, in the case of the eye E having a large eccentricity of the apex of the cornea with respect to the center of the pupil, the reflected light beam by the cornea Ec of the light beam that has passed through the index plate 7 is not observed even if the rough alignment is performed with reference to the center of the pupil. It does not fall within the effective diameter of the lens 13 and cannot reach the image sensor 18.
[0027]
For this reason, in this embodiment, even if the measurement light source 8 emits light after completion of the approximate alignment between the eye E and the eye inspection means, the imaging elements 18 produce the index images 16a ′, 16b ′, and 16c ′. It may not be detected. In such a case, based on the left and right eye information detected by the left and right eye detection means 27, the arithmetic processing unit 25 moves the motor to shift the relative position between the eye E and the eye inspection means from the center of the pupil to the ear side. Are controlled to detect index images 16a ′, 16b ′, and 16c ′. In this way, the examiner can easily recognize the index images 16a ′, 16b ′, and 16c ′ due to the reflection of the cornea Ec even in the subject eye E in which the eccentric amount of the corneal apex is large with respect to the pupil center. It becomes possible to perform accurate alignment quickly.
[0028]
The index image 16a ′ moves upward when the distance between the eye E and the eye inspection means is short, and moves downward when it is far away. Conversely, the index image 16b ′ is the eye E and the eye inspection means. When the distance is short, it moves downward, and when it is far away, it moves upward, and the position of the index 16c ′ hardly changes. Therefore, when the measurement light source 8 emits light after completion of the approximate alignment between the eye E and the eye inspection means, at least one of the index images 16a ′, 16b ′, and 16c ′ is obtained. When detected, the arithmetic processing unit 25 controls the alignment means 26 including the electric gantry to change the distance between the eye E and the eye inspection means, and first identifies which index image is detected.
[0029]
As a result, the moving direction of the eye inspection means with respect to the eye E is determined, so that the eye inspection means is moved in that direction, and at least two index images of the index images 16a ′, 16b ′, 16c ′ are obtained. Then, the alignment means 26 is controlled and moved in the front-rear direction so that the two index images are horizontally aligned as shown in FIG. In this way, the working distance between the eye E and the eye inspection means can be accurately and simply adjusted.
[0030]
The examiner performs alignment by operating the operation unit 28 while watching the television monitor 30 so that the pupil center of the eye E and the optical axis of the eye examination means coincide with each other, and when this alignment is completed, the examiner A measurement start switch provided on the operation unit 28 is pressed. Thereby, the arithmetic processing unit 25 emits the measurement light source 8 and measures the eye refractive power of the eye E to be examined. In this embodiment, since the eye refractive power measurement inspection light source 8 and the index projection light source are shared, and the anterior ocular segment observation optical system and the fixed index light receiving optical system are shared, the configuration is simplified. And miniaturization and cost reduction can be achieved.
[0031]
In the first embodiment, the examiner uses the motorized gantry operation switch of the operation unit 28 while viewing the image of the vicinity of the anterior eye portion of the eye E displayed on the TV monitor 30 and uses the electric gantry operation switch. It moves in three directions, up and down, left and right, and front and back, and aligns with the eye E, but with the same configuration as the second embodiment, the examiner presses the measurement start switch on the operation unit 28. Alternatively, the alignment between the eye E and the eye inspection unit may be automatically performed, and the measurement may be automatically performed when the alignment is completed.
[0032]
First, the subject places his chin on a face support member (not shown), and when the face is fixed, the examiner presses a measurement start switch of the operation unit 28. At this time, the eye inspection means is disposed at a predetermined reference position of the eye E to be determined in advance between the left and right eyes. The arithmetic processing unit 25 turns on the illumination light source 2 to illuminate the vicinity of the anterior segment of the eye E. Reflected and scattered light from the vicinity of the anterior eye part is reflected by the dichroic mirror 1, and is reflected on the image sensor 18 through the observation objective lens 13, the dichroic mirror 14, the aperture 16 c of the three-hole aperture 16, and the imaging lens 17. Image.
[0033]
The video signal from the image sensor 18 is converted into a digital signal by the A / D converter 21 and transmitted to the storage means 23 and the arithmetic processing unit 25. The arithmetic processing unit 25 extracts the pupil center of the eye E from the digital signal. The alignment unit 26 is controlled so that the center of the pupil coincides with the optical axis of the eye inspection unit. In the present embodiment, the periphery of the eye E is illuminated by the illumination light source 2 and becomes a secondary light source to emit reflected and scattered light. However, the light beam that illuminates the pupil from the illumination light source 2 passes through the pupil from the eye E. In order to enter the inside, the reflected scattered light from the pupil does not reach the image sensor 18. Therefore, the pupil center is extracted by binarizing the video signal.
[0034]
When the rough alignment between the eye E and the eye inspection means is completed, the arithmetic processing unit 25 turns on the measurement light source 8 slightly. The light beam emitted from the measurement light source 8 illuminates the index plate 7, and the light beam from the index plate 7 is substantially passed through the projection lens 6, the projection aperture 5, the hole portion of the perforated mirror 4, and the eye refraction measurement objective lens 3. After being converted into parallel light, most of the light beam passes through the dichroic mirror 1 and forms a reflected image on the cornea Ec of the eye E to be examined. A part of the light beam reflected by the cornea Ec is reflected by the dichroic mirror 1, condensed by the observation objective lens 13, reflected by the dichroic mirror 14, passes through the wedge prisms 15 a, 15 b, and 3 of the three-hole aperture plate 16. It passes through the two openings 16a, 16b, and 16c and is divided into three light beams La, Lb, and Lc and reaches the image pickup device 18 by the imaging lens 17 to form index images 16a ′, 16b ′, and 16c ′, respectively. .
[0035]
In the case of the subject eye E in which the pupil center and the corneal apex are decentered, the index image 16a ′ is in spite of the completion of the alignment between the pupil center of the subject eye E and the optical axis of the eye inspection means. , 16b ′, 16c ′ may not be detected. At this time, for example, when two index images are visible, the arithmetic processing unit 25 changes the distance between the eye E and the eye inspection means so that the two detected index images are aligned in the horizontal direction. To adjust the working distance.
[0036]
When only one index image is visible, the index image 16a ′ or the index image 16b ′ is detected by changing the distance between the eye E and the eye inspection means. The direction in which the remaining two index images can be detected is specified, and the alignment means 26 is controlled to move the eye examination means in that direction. In this way, since at least two or more index images can be easily detected, the alignment means 26 is controlled to match the correct working distance so that the index images are aligned in the horizontal direction. When the working distance alignment is completed, the pupil center is extracted again, and the alignment between the pupil center and the optical axis of the eye examination means is performed.
[0037]
If no index image is detected, the eye examination means is moved by a predetermined amount toward the right side toward the eye E when the left eye is being examined, that is, toward the ear side of the left eye. To drive the motor. As described above, in many eyes E, the apex of the cornea is decentered toward the ear with respect to the center of the pupil. Thus, the index images can be detected in this way, and the number of detected index images is increased. Accordingly, the eye E and the eye inspection means are aligned by the same method as described above. When the right eye is being examined, the index image can be detected in the same manner by moving the eye examination means to the left side toward the eye E, that is, to the ear side of the right eye by a predetermined amount.
[0038]
When the alignment between the eye E and the eye inspection means is completed, the arithmetic processing unit 25 causes the measurement light source 8 to emit light, and the reflected light from the fundus Ea of the eye E is received by the image sensor 12 and is not shown. The fixation target projecting means is controlled so that the eye E is in a cloudy state, and the eye refractive power of the eye E is measured.
[0039]
【The invention's effect】
As described above, the ophthalmic measurement apparatus according to the present invention moves the measurement unit in a direction corresponding to the information detected by the left and right eye detection units when the corneal reflection light is not detected by the alignment light receiving optical system. By controlling the driving means as described above, the corneal reflection can be easily detected, so that accurate alignment can be performed quickly.
[0040]
In addition, the ophthalmologic measurement apparatus according to the present invention detects the pupil center position of the eye to be extracted extracted based on the output of the imaging device that images the anterior segment, information detected by the left and right eye detection means, or detected by the index light receiving optical system. Based on the reflected light from the cornea, the driving means is driven so as to move the measuring means and the imaging means in a predetermined direction, whereby accurate alignment can be performed.
[Brief description of the drawings]
FIG. 1 is a configuration diagram of an ophthalmologic measurement apparatus according to a first embodiment.
FIG. 2 is a front view of a wedge prism and a three-hole aperture plate.
FIG. 3 is an explanatory diagram of an index light beam at a correct working distance.
FIG. 4 is an explanatory diagram of an index light beam when the working distance is short.
FIG. 5 is an explanatory diagram of an index light beam when the working distance is long.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1, 14 Dichroic mirror 2 Anterior eye part illumination light source 7 Indicator plate 8 Eye refractive power measurement light source 9 Six-part diaphragm 10 Six-part prism 12, 18 Image sensor 15a, 15b Wedge prism 16 Three-hole diaphragm 23, 24 Storage means 25 Arithmetic processing unit 26 Alignment unit 27 Left and right eye detection unit 28 Operation unit 30 Television monitor

Claims (9)

A measuring means for irradiating the eye to be measured with a measurement light beam and measuring the state of the eye to be examined based on the reflected light; a driving means for driving the measuring means for alignment with the eye to be examined; Projection means for projecting a light beam for alignment on the cornea, light receiving means for receiving the light flux of the projection means reflected from the cornea, left and right eye detection means for detecting whether the eye to be examined is a left eye or a right eye, and the light reception means Drive control means for driving the drive means in a direction corresponding to detection information detected by the left and right eye detection means when no corneal reflected light of the light flux of the projection means is detected by Ophthalmic measuring device. The ophthalmic measurement apparatus according to claim 1, wherein a light source of the measurement light beam and a light source of the alignment light beam are the same. An imaging unit that captures an anterior segment image including a pupil portion of the eye to be examined; and a pupil detection unit that detects a pupil of the eye to be examined based on an imaging output of the imaging unit. The detection information of the pupil detection unit includes The ophthalmologic measurement apparatus according to claim 1, wherein the driving means is driven based on the driving means. The ophthalmic measurement apparatus according to claim 1, wherein the light receiving unit is an imaging unit that captures an anterior segment image including a pupil portion of an eye to be examined, and has a display unit that displays an imaging output of the imaging unit.   The ophthalmic measurement apparatus according to claim 1, wherein the drive control apparatus drives the measurement unit to the ear side of the eye to be examined. Measuring means for irradiating the subject's eye with a measurement light beam and measuring the state of the subject's eye based on the reflected light, imaging means for imaging an anterior segment image including the pupil portion of the subject's eye, and the measuring means A drive unit that drives the imaging unit for alignment with the eye to be examined, a projection unit that projects a light beam for alignment onto the cornea of the eye to be examined, and a light beam of the projection unit that is reflected from the cornea And a light deflecting unit that deflects the light in different directions and guides it to the imaging unit, and drives the driving unit based on pupil information detected by the imaging unit or corneal reflected light reflected by the projection unit. An ophthalmologic measurement device, wherein left and right eye detection means detects whether the eye to be examined is a left eye or a right eye, and the left and right eye detection when the imaging means does not detect the corneal reflected light of the light flux of the projection means Ophthalmic measuring apparatus characterized by having a drive control means for driving said drive means in a direction corresponding to the detection information detected by the step. The ophthalmic measurement apparatus according to claim 6, wherein the control unit drives and controls the measurement unit on the ear side of the eye to be examined. Based on the pupil information, the driving unit is driven so that the optical axis of the measuring unit coincides with the center of the pupil, and the driving unit is configured to adjust the working distance of the measuring unit with respect to the eye to be examined based on the corneal reflection light. The ophthalmic measurement apparatus according to claim 6, wherein the means is driven. The ophthalmologic measurement apparatus according to claim 6, further comprising display means for displaying an imaging output of the imaging means.

Images