JP2001025459A - Ophthalmic measuring device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To perform an alignment at a high precision from an initial positioning to a fine adjustment between an eye to be examined examining means and an eye to be examined without requiring the skill of an operator. SOLUTION: An index image 16a' moves upward when a distance between an eye E to be examined and an eye to be examined examining means is small, and moves downward when the distance is large. On the contrary, an index image 16b' moves downward when a distance between the eye E to be examined and the eye to be examined examining means is small, and moves upward when the distance is large. The location of an index 16c' hardly changes. Thus, after a rough positioning for the eye E to be examined and the eye to be examined examining means is completed, when the light of a light source for the measurement is emitted, if at least one index image from among the index images 16a', 16b' and 16c' is detected, the distance between the eye to be examined and the examining means is changed by controlling an alignment means by an operation processing section, and which index image has been detected is specified first. By this action, the moving direction of the eye to be examined examining means to the eye to be examined is determined. Then, the eye to be examined examining means is moved in that direction, and at least two index images from among the index images 16a', 16b' and 16c' are detected, and the alignment is performed by controlling the alignment means in such a manner that the two index images may be horizontally lined up.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an ophthalmologic measuring apparatus for measuring an ophthalmologic characteristic such as an eye refractive power inherent to an eye to be examined.

[0002]

2. Description of the Related Art Conventionally, an ophthalmologic measuring apparatus adjusts the position of an examination / measuring unit and an eye while observing the eye to be inspected, and measures the eye refractive power, intraocular pressure, fundus image, fundus blood flow and the like. Obtain unique information. In these ophthalmic measurement apparatuses, when aligning the inspection and measurement means with the eye to be inspected, the examiner operates the operation means while observing the anterior eye image of the eye to be inspected displayed on the television monitor. After the coarse adjustment of the position between the measuring means and the eye to be examined, precise positioning is performed by relying on the corneal reflection image of the index light beam projected on the cornea of the eye to be examined. This is a complicated and labor-intensive operation.

For this reason, recently, an operator operates operating means while observing an anterior eye image of an eye to be inspected on a television monitor, and the eye to be inspected is almost in the vicinity of the center of the observation field of view and the apparatus and the eye to be inspected. An ophthalmologic measurement apparatus is disclosed in which when the working distance between the camera and the camera falls within a predetermined range, the corneal reflection image is photoelectrically detected, the electric gantry is controlled, the inspection means is moved, and the precise positioning is automatically performed. Further, an ophthalmologic measuring apparatus which detects the approximate position of the eye to be inspected from the anterior eye image obtained photoelectrically and controls the motorized gantry to automatically coarsely adjust the initial positions of the inspection and measuring means and the eye to be inspected. Has also been proposed.

[0004]

However, in the above-mentioned conventional ophthalmologic measuring apparatus, if the initial position between the inspection and measuring means and the eye to be examined is largely shifted, reflected light from the cornea of the eye to be examined is received. There is a problem that can not be.
In order to make it possible to receive the corneal reflected light even in such a state, a bright objective lens must be used. Therefore, the size of the apparatus is increased and the cost is increased. Also, in a device that detects the pupil position from the anterior segment image of the eye to be examined without using corneal reflected light and controls the electric gantry based on the pupil position, the center of the pupil and the center of the cornea are deviated. In the case of the eye to be examined, there is a problem that the reflected light from the cornea cannot be received even if the initial position is set to the center of the pupil.

An object of the present invention is to solve the above-mentioned problems,
It is an object of the present invention to provide an ophthalmologic measuring apparatus capable of performing accurate alignment from initial position adjustment to fine adjustment of an eye to be inspected / measured part and an eye to be inspected without requiring skill of an operator.

[0006]

An ophthalmological measuring apparatus according to the present invention for achieving the above object irradiates a measuring light beam to a subject's eye and measures the condition of the subject's eye based on the reflected light. Means, driving means for driving the measuring means for positioning with respect to the eye to be examined, projection means for projecting a light beam for positioning onto the cornea of the eye to be examined, and light flux of the projection means reflected from the cornea. Light receiving means for receiving light, left and right eye detecting means for detecting whether the subject's eye is the left eye or right eye, and detecting by the left and right eye detecting means when the corneal reflected light of the light beam of the projection means is not detected by the light receiving means Drive control means for driving the drive means in a direction corresponding to the detected information.

Further, the ophthalmologic measuring apparatus according to the present invention irradiates a measuring light beam to the eye to be inspected, and measures the state of the eye based on the reflected light. Imaging means for capturing an eye image, driving means for driving the measurement means and the imaging means for alignment with the eye to be examined, and projection means for projecting a light beam for alignment onto the cornea of the eye to be examined Light deflecting means for dividing the light flux of the projection means reflected from the cornea and deflecting the luminous flux in different directions to guide the light to the imaging means, wherein pupil information detected by the imaging means or reflected by the projection means An ophthalmologic measurement device that drives the driving unit based on the reflected corneal reflected light, a left and right eye detection unit that detects whether the subject's eye is a left eye or a right eye, and a cornea of the light flux of the projection unit that is obtained by the imaging unit. If the Shako is not detected, characterized by 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]

DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be described in detail with reference to the illustrated embodiment. FIG. 1 shows a configuration diagram of an ophthalmologic measuring apparatus according to a first embodiment, in which a dichroic mirror 1 is arranged obliquely so as to face an eye E to be examined, and at a position off the optical axis between the eye E and the dichroic mirror 1. An anterior 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.

On the optical path O1 in the transmission direction of the dichroic mirror 1, an objective lens 3 for measuring an eye refractive power, a perforated mirror 4, a projection stop 5, a projection lens 6, an index plate 7, and a light source 2 for anterior segment illumination. The measurement light sources 8 that emit near-infrared light whose wavelength is longer by 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 of the wavelength light, and reflecting the wavelength light emitted from the illumination light source 2. The components 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 to be measured with a measurement light beam. In this embodiment, as will be described later, the measuring light projection optical system is also used as a unit for projecting a light beam for positioning on the cornea of the eye to be examined.

In the direction of reflection of the perforated mirror 4, a six-hole stop 9 having six apertures outside the optical axis is arranged, and a six-segment prism 10, a relay lens 11, a CCD
An image sensor 12 such as a camera is sequentially arranged. The measuring objective lens 3 and the imaging element 12 constitute an optical system for measuring eye refractive power. The measuring light projecting optical system and the measuring light receiving optical system constitute measuring means for measuring the state of the eye to be inspected.

In the direction of reflection 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 arranged. On an optical path O2 in a reflection direction of the dichroic mirror 14, wedge prisms 15a and 15b are provided. A three-hole stop plate 16 having three openings 16a, 16b, 16c to which are adhered is disposed so as to be freely inserted into and removed from the optical path O2 as shown in FIG. A light receiving element such as a CCD camera or an image pickup element 18 as an image pickup means for picking up an image of the anterior eye including the pupil in substantially conjugate with the vicinity of the anterior eye is arranged. The members from the observation objective lens 13 to the image sensor 18 constitute an anterior ocular segment observation optical system.

The wedge prisms 15a and 15b are coated with a multilayer film having a property of transmitting wavelength light emitted from the measurement light source 8 and reflecting wavelength light emitted from the illumination light source 2. Denotes an opening 16a of the three-hole aperture plate 16.
The light beam passing through the wedge prism 1
Reference numeral 5b has a function of deflecting a light beam passing through the opening 16b of the three-hole aperture plate 16 toward the front of the drawing. As described above, the corneal reflection light from the measurement light source 8 is deflected in different directions and reaches the image sensor 18.

On the optical path 03 in the transmission direction of the dichroic mirror 14, a mirror 19 and a known fixation target projection optical system 20 for the subject E to fixate are arranged.
The anterior eye observation optical system, the fixation target projection optical system 20, the measuring light projecting optical system, the measuring light receiving optical system, and the like constitute an eye inspection unit. The eye inspection unit is a driving unit (not shown). It is mounted on an electric gantry movable in three axial directions by an electric motor or the like.

The outputs of the image sensor 12 and the image sensor 18 are
The outputs of the A / D converter 21 and the A / D converter 22 are respectively connected to the A / D converter 21 and the A / D converter 22 and connected to the storage unit 23 and the storage unit 24, respectively. It is connected to an arithmetic processing unit 25 that performs overall control. The output of the arithmetic processing unit 25 is an alignment unit 26 that electrically moves the eye examination unit in three axial directions by a driving unit such as a light source 8 for measurement and a motor.
It is attached to a motorized gantry, and is connected to left and right eye detection means 27 including a microswitch for detecting the left and right of the eye E by detecting the position of the alignment means 26. The output of the operation unit 28 for starting measurement or manually controlling the alignment means 26 is output to the arithmetic processing unit 25.
The output of the arithmetic processing unit 25 is connected to a television monitor 30 via a D / A converter 29.

In such a configuration, when the eye E is illuminated by the illumination light source 2, the reflected and scattered light from the periphery of the anterior segment of the eye E is reflected by the dichroic mirror 1 and is reflected by the observation objective lens 13. The light is converted into substantially parallel light, reflected by the dichroic mirror 14,
The light passes through c and is imaged on an imaging element 18 such as a CCD camera by an imaging lens 17. The output signal of the image sensor 18 is A /
The digital signal is converted into a digital signal by the D converter 21, and is transmitted to the television monitor 3 via the arithmetic processing unit 25 and the D / A converter 29.
An anterior ocular segment image E ′ is projected on 0.

The examiner views the anterior eye image E ′ on the television monitor 30.
Using the electric gantry operation switch provided on the operation unit 28, the examiner moves the eye to be inspected in three directions of up, down, left, right, front and back, and aligns the eye with the eye E.

When the approximate alignment between the eye E and the eye inspection means is completed, the light beam emitted from the measuring light source 8 illuminates the index plate 7, and the light beam restricted by the index plate 7 is The light passes through the projection stop 5 and the aperture of the perforated mirror 4 and once forms an image on the focal plane of the measurement objective lens 3 to become parallel light. Most of the light passes through the dichroic mirror 1 and reaches the eye E to be inspected. .

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 by the observation objective lens 13, is deflected to the optical path O2 by the dichroic mirror 14, and is wedge-shaped. The three light beams La and L pass through the prisms 15a and 15b and pass through the three openings 16a, 16b and 16c of the three-hole aperture plate 16, respectively.
b, Lc and the imaging device 1
8, the target images 16a ′, 16b ′,
16c 'is displayed on the television monitor 30.

As shown in FIGS. 3 to 5, the wedge prism 15
a is a light beam La passing through the opening 16a of the three-hole stop plate 16.
And the wedge prism 15b deflects the light beam Lb passing through the opening 16b of the three-hole aperture plate 16 toward the front with respect to the paper.

Therefore, when the working distance between the eye E and the eye inspection means is correct as shown in FIG.
Since the luminous flux from the index plate 7 reflected by the cornea Ec is converted into substantially parallel light by the observation objective lens 13, the index images 16a 'and 16 projected on the television monitor 30 are displayed.
b 'and 16c' are linearly arranged in the horizontal direction as shown in FIG. At this time, the index image 16c 'indicates the corneal vertex position.

As shown in FIG. 4 (a), when the distance between the eye E and the eye inspection means is shorter than the correct working distance, the luminous flux from the index plate 7 reflected by the cornea Ec is Since the light is diffused by the observation objective lens 13, FIG.
The index images 16a ', 16b' and 16c 'projected on the television monitor 30 as shown in FIG.
Are linearly arranged above the index image 16c ', and the index image 16b' is linearly arranged below the index image 16c '.
Appears at the corneal vertex.

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 luminous flux from the index plate 7 reflected by the cornea Ec is Since the light is converged by the observation objective lens 13, FIG.
The index images 16a ', 16b' and 16c 'projected on the television monitor 30 as shown in FIG.
Are linearly arranged below the index image 16c 'and the index image 16b' is linearly arranged above the index image 16c '.
Appears at the corneal vertex.

Thus, 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. Precise positioning can be performed.

After the positioning is completed, the examiner operates the operation unit 28.
Is pressed, the arithmetic processing unit 25 emits the light source 8 for measurement. The luminous flux emitted from the measurement light source 8 is
Index plate 7, Projection lens 6, Projection stop 5, Perforated mirror 4
Hole, measurement objective lens 3, dichroic mirror 1
And reaches the eye E to be examined, and forms an index image 7 'on the fundus oculi Ea. Most of the light flux reflected and scattered using this index image 7 ′ as a secondary light source passes through the dichroic mirror 1,
Reflected by a perforated mirror 4 via a measuring objective lens 3,
After being divided into six light beams by the six-hole aperture 9, the image pickup device 12
Six spot images are formed on the top.

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, controls the fixation target projection optical system 20 on the optical path O3, and prompts the subject to fog. By performing this operation several times, it is possible to measure the eye refractive power of the eye E to be examined in the cloudy state without adjustment.

Although the human eye varies depending on individual differences and pathological factors, the corneal apex is eccentric with respect to the center of the pupil in almost all of the eyes E to be examined. Is known to tend to be eccentric. That is, the pupil center of the human eye does not always coincide with the corneal vertex, and the corneal vertex 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 cornea Ec of the luminous flux passing through the index plate 7 can be obtained even if the rough alignment is performed with reference to the center of the pupil.
Is not within the effective diameter of the observation objective lens 13 and cannot reach the image sensor 18.

For this reason, in the present embodiment, even if the measuring light source 8 emits light after the approximate alignment of the eye E and the eye inspection means, the index image 16
In some cases, a ', 16b', and 16c 'cannot be detected.
In such a case, the arithmetic processing unit 25 sets the motor so as to shift the relative position between the eye E and the eye inspection unit from the center of the pupil to the ear side based on the left and right eye information detected by the left and right eye detection unit 27. Are driven to control the index images 16a ', 16b', 1
6c 'is detected. In this manner, even in the subject's eye E in which the amount of eccentricity of the corneal vertex is large with respect to the center of the pupil, the examiner can easily recognize the index images 16a ', 16a by reflection of the cornea Ec.
b ′ and 16c ′ can be recognized, and accurate positioning can be quickly performed.

The index image 16a 'moves upward when the distance between the eye E and the eye inspection means is short, and moves downward when the distance is long. Conversely, the index image 16b' moves with the eye E. When the distance from the optometry examination unit is short, it moves downward, and when it is far, it moves upward, and the position of the index 16c 'hardly changes. For this reason, when the measuring light source 8 emits light after the approximate alignment between the eye E and the eye inspection means, at least one of the index images 16a ', 16b', and 16c 'is displayed. When it is detected, the arithmetic processing unit 25 controls the alignment unit 26 including the motorized gantry to change the distance between the eye E and the eye inspection unit, and first specifies any of the detected index images.

With this, the moving direction of the eye inspecting means with respect to the eye E is determined, so that the eye inspecting means is moved in that direction and the index images 16a ', 16b', 16
At least two index images out of c ′ are detected, and the alignment means 26 is controlled to move in the front-back direction so that the two index images are horizontally arranged 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.

The examiner operates the operation unit 28 while watching the television monitor 30 so that the center of the pupil of the eye E and the optical axis of the eye examination means coincide with each other. The examiner presses a measurement start switch provided on the operation unit 28. Accordingly, the arithmetic processing unit 25 emits light from the measurement light source 8 and measures the eye refractive power of the eye E to be examined. In this embodiment, since the light source 8 for the eye refractive power measurement inspection and the light source for the index projection are shared, and the anterior ocular segment observation optical system and the fixed index light receiving optical system are shared, the configuration is simplified. Therefore, miniaturization and cost reduction can be achieved.

In the first embodiment, the examiner operates the TV monitor 3
Using the electric gantry operation switch of the operation unit 28, the examiner moves the eye to be inspected in three directions of up, down, left, right, front and back while watching the image of the vicinity of the anterior eye of the eye E to be projected on 0. The position of the eye E and the eye inspection means are adjusted by the examiner pressing the measurement start switch of the operation unit 28 in the same configuration as the second embodiment. The alignment may be performed automatically, and the measurement may be automatically performed when the positioning is completed.

First, the subject places his / her chin on a face support member (not shown), and when the face is fixed, the examiner presses the measurement start switch of the operation unit 28. At this time, the eye to be inspected is arranged at a predetermined reference position of the eye to be inspected E of the left and right eyes. The arithmetic processing unit 25 turns on the illumination light source 2 and turns the eye E to be inspected.
Around the anterior segment of the eye. The reflected and scattered light from the periphery of the anterior segment is reflected by the dichroic mirror 1 and forms an image on the image sensor 18 via the observation objective lens 13, the dichroic mirror 14, the opening 16 c of the aperture 16, and the imaging lens 17. Image.

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 calculates the pupil center of the eye E from the digital signal. Then, the alignment unit 26 is controlled so that the center of the pupil coincides with the optical axis of the eye examination 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 and emits reflected and scattered light. Since the light enters 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.

When the approximate alignment between the eye E and the eye inspection means is completed, the arithmetic processing unit 25 slightly turns on the measuring light source 8. The luminous flux emitted from the measuring light source 8 illuminates the index plate 7, and the luminous flux from the index plate 7 passes through the projection lens 6, the projection stop 5, the hole of the perforated mirror 4, and the objective lens 3 for eye refraction measurement. After being converted into the parallel light, most of the light flux passes through the dichroic mirror 1 and the cornea Ec of the eye E to be examined.
To form a reflected image. The light beam reflected by the cornea Ec is partially reflected by the dichroic mirror 1, condensed by the observation objective lens 13, reflected by the dichroic mirror 14, passed through the wedge prisms 15a and 15b, and passed through the three-hole aperture plate 16
Are divided into three light beams La, Lb, and Lc through the three openings 16a, 16b, and 16c, and reach the image sensor 18 by the imaging lens 17, and each of the target images 16a ',
16b 'and 16c' are formed.

In the case of the eye E in which the center of the pupil and the apex of the cornea are eccentric, the index is determined even though the alignment between the center of the pupil of the eye E and the optical axis of the eye inspecting means has been completed. In some cases, at least one of the images 16a ', 16b', 16c 'cannot 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 to be inspected and the eye inspection means so that the detected two index images are arranged in the horizontal direction. Then, the working distance is adjusted.

When only one index image can be seen, the distance between the eye E and the eye inspection means is changed to detect the index image 16a 'or 16b. Is determined, the direction in which the remaining two index images can be detected is specified, and the alignment unit 26 is controlled to move the eye examination unit in that direction. In this manner, at least two or more index images can be easily detected, and the alignment means 26 is controlled so that the index images are aligned with the correct working distance so that the index images are arranged in the horizontal direction. When the adjustment of the working distance is completed, the center of the pupil is extracted again, and the center of the pupil is aligned with the optical axis of the eye examination unit.

When no index image has been detected, when the left eye is being inspected, the eye inspection means is moved by a predetermined amount to the right side toward the eye E, ie, to the left ear side. Drive the motor to move. As described above, in many eyes E, the corneal apex is eccentric to the ear side with respect to the center of the pupil, so that the index images can be detected in this manner, and the number of the detected index images is reduced. Accordingly, the eye E and the eye inspection means are aligned with each other by the same method as described above. When the right eye is being examined, the eye E
If the eye examination means is moved by a predetermined amount toward the left side, that is, toward the ear of the right eye, the index image can be similarly detected.

When the positioning of the eye to be inspected E and the eye to be inspected has been completed, the arithmetic processing unit 25 causes the measuring light source 8 to emit light, and the reflected light from the fundus oculi Ea of the eye to be inspected E is received by the image sensor 12. Further, the eye E to be examined is controlled to be in a cloudy state by controlling a fixation target projecting means (not shown), and the eye refractive power of the eye E is measured.

[0039]

As described above, the ophthalmologic measuring apparatus according to the present invention is arranged such that when the corneal reflected light is not detected by the light receiving optical system for positioning, the ophthalmologic measuring apparatus moves in the direction corresponding to the information detected by the left and right eye detecting means. By controlling the driving means so as to move the measuring means, corneal reflection can be easily detected, so that accurate positioning can be quickly performed.

Further, the ophthalmologic measuring apparatus according to the present invention is characterized in that the center position of the pupil of the eye to be extracted, which is extracted based on the output of the image sensor for imaging the anterior eye part, the information detected by the left and right eye detecting means, or the index receiving optical system By driving the driving means so as to move the measuring means and the imaging means in a predetermined direction based on the corneal reflected light detected by the system, accurate positioning 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 stop 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 Light source for anterior segment illumination 7 Indicator plate 8 Eye refractive power measurement light source 9 6-segment diaphragm 10 6-segment prism 12, 18 Image sensor 15a, 15b Wedge prism 16 3-hole diaphragm plate 23, 24 Storage means 25 Arithmetic processing unit 26 Alignment unit 27 Left and right eye detection unit 28 Operation unit 30 TV monitor

Claims (9)

[Claims] 1. A measuring means for irradiating an eye to be inspected with a measuring light beam and measuring a state of the eye based on the reflected light, and a driving means for driving the measuring means for positioning with respect to the eye to be inspected. Projection means for projecting a light beam for alignment onto the cornea of the eye to be examined, light receiving means for receiving the light beam of the projection means reflected from the cornea, and left and right eye detecting means for detecting whether the eye to be examined is a left eye or a right eye And, when the corneal reflected light of the light beam of the projection means is not detected by the light receiving means,
An ophthalmologic measuring apparatus, comprising: a drive control unit that drives the drive unit in a direction corresponding to detection information detected by the left and right eye detection units. 2. The ophthalmologic measurement apparatus according to claim 1, wherein the light source of the measurement light beam and the light source of the positioning light beam are the same. 3. An pupil detection device comprising: an imaging unit that captures an anterior eye image including a pupil of an eye to be inspected; and a pupil detection unit that detects a pupil of the eye to be inspected based on an imaging output of the imaging unit. The ophthalmologic measurement apparatus according to claim 1, wherein the driving unit is driven based on detection information of the unit. 4. The ophthalmologic measurement apparatus according to claim 1, wherein the light receiving unit is an imaging unit that captures an anterior segment image including a pupil of the subject's eye, and further includes a display unit that displays an image output of the imaging unit. . 5. The ophthalmologic measurement apparatus according to claim 1, wherein the drive control device drives the measurement unit toward the ear of the eye to be examined by a predetermined amount. 6. A measuring means for irradiating a measurement light beam to an eye to be inspected and measuring a state of the eye to be inspected based on the reflected light, and an imaging means for imaging an anterior eye image including a pupil of the eye to be inspected. Driving means for driving the measurement means and the imaging means for positioning with respect to the eye to be examined, projection means for projecting a light beam for positioning onto the cornea of the eye to be examined, and projection means reflected from the cornea Light deflecting means for splitting the light flux and deflecting them in different directions and guiding the light flux to the imaging means, and based on pupil information detected by the imaging means or corneal reflection light reflected by the projection means. An ophthalmologic measurement device that drives a driving unit, wherein a left and right eye detecting unit that detects whether the subject's eye is a left eye or a right eye, and a corneal reflected light beam of the projection unit that is not detected by the imaging unit. An ophthalmologic measurement apparatus comprising: a drive control unit that drives the drive unit in a direction according to detection information detected by the left and right eye detection units. 7. The ophthalmologic measuring apparatus according to claim 6, wherein the control means drives and controls the measuring means on the ear side of the subject's eye. 8. The driving means is driven based on the pupil information so that the optical axis of the measuring means coincides with the center of the pupil, and the working distance of the measuring means relative to the eye to be examined is adjusted based on the corneal reflected light. The ophthalmologic measurement apparatus according to claim 6, wherein the driving unit is driven so as to perform the operation. 9. The ophthalmologic measurement apparatus according to claim 6, further comprising display means for displaying an image output of said image pickup means.