JPH08168466A - Optometry apparatus - Google Patents

Optometry apparatus

Info

Publication number
JPH08168466A
JPH08168466A JP6335026A JP33502694A JPH08168466A JP H08168466 A JPH08168466 A JP H08168466A JP 6335026 A JP6335026 A JP 6335026A JP 33502694 A JP33502694 A JP 33502694A JP H08168466 A JPH08168466 A JP H08168466A
Authority
JP
Japan
Prior art keywords
optotype
diopter
subject
response
changing
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
JP6335026A
Other languages
Japanese (ja)
Inventor
Yoshi Kobayakawa
嘉 小早川
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Canon Inc
Original Assignee
Canon Inc
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Canon Inc filed Critical Canon Inc
Priority to JP6335026A priority Critical patent/JPH08168466A/en
Publication of JPH08168466A publication Critical patent/JPH08168466A/en
Pending legal-status Critical Current

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  • Eye Examination Apparatus (AREA)

Abstract

PURPOSE: To perform a precise measurement of self-conscious eye refraction in a short time. CONSTITUTION: A specified striped pattern is displayed on a liq. crystal plate 5 from a sign generator 12 and a subject S to by examined observes this visual indication through horopters 1L and 1R, rotating prisms 2L and 2R, liq. crystal shutters 3L and 3R and a lens 4. Visibility is changed by means of the spherical surface lens of the horopters 1L and 1R and the rotating prisms 2L and 2R and, when the subject S to be examined finds the striped pattern, he responds to it by a responding means. A control means 11 changes the visibility of the next displaying visual indication in cope with the visibility to which the subject S to be examined has responded and this process is repeated while the interval of the striped pattern is successively changed to calculate his eyesight from the thinnest striped pattern to which the subject S to be examined.

Description

【発明の詳細な説明】Detailed Description of the Invention

【0001】[0001]

【産業上の利用分野】本発明は、眼科病院や眼鏡店にお
いて屈折力測定や視力測定などに使用される検眼装置に
関するものである。
BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an optometry apparatus used for measuring refractive power or visual acuity in an ophthalmic hospital or an eyeglass store.

【0002】[0002]

【従来の技術】[Prior art]

(1) 従来から、自覚的屈折力測定装置においては、被検
者に同時に2つの視標を呈示し、何れの視標がより明瞭
に視認できるかを被検者に聞きながら、検者が球面度
数、円柱度数、円柱角度を調節して測定を行っている。
(1) Conventionally, in the subjective refractive power measuring device, the examiner presents two optotypes to the examinee at the same time, and the examiner asks which examinee can be seen more clearly while listening to the examinee. The measurement is performed by adjusting the spherical power, the cylindrical power, and the cylindrical angle.

【0003】(2) また、近距離での視力検査では被検眼
と視標との実際の距離を変更して測定を行っている。
(2) Further, in the visual acuity test at a short distance, the actual distance between the eye to be inspected and the visual target is changed to perform the measurement.

【0004】(3) 斜位を測定するためには、被検者の左
右眼に別々の視標を呈示し、検者は異なる度数のプリズ
ムを順次に入れ換えて、被検者の応答を判断して測定を
行っている。
(3) In order to measure phoria, the right and left eyes of the subject are presented with different targets, and the examiner sequentially replaces prisms of different powers to judge the subject's response. I am making measurements.

【0005】(4) 大きさの異なる多数の視標を一度に被
検者に呈示し、検者がその中から1つずつ指示を行い被
検者の応答により視力測定を行っている。
(4) A large number of optotypes having different sizes are presented to the subject at one time, and the examiner gives an instruction one by one to measure the visual acuity based on the response of the subject.

【0006】(5) 検者は被検者に1個の視標を呈示して
被検者の応答により視度を求め、次に別の視標を呈示し
て視度を求めるという操作を繰り返して眼屈折値を測定
している。
(5) The examiner presents one optotype to the subject, obtains the diopter from the response of the subject, and then presents another optotype to obtain the diopter. The eye refraction value is measured repeatedly.

【0007】[0007]

【発明が解決しようとする課題】[Problems to be Solved by the Invention]

(イ) しかしながら、上述の従来例(1) においては、球面
度数などの因子を少しずつ変更させて被検者に視標を呈
示し、被検者の応答により測定を行っているために、測
定に非常に時間が掛かり、更に検者はその専門技術に習
熟していることが要求される。
(B) However, in the above-mentioned conventional example (1), factors such as the spherical power are gradually changed to present the target to the subject, and the measurement is performed according to the response of the subject. The measurement is very time consuming and the examiner is required to be familiar with his or her expertise.

【0008】(ロ) また、上述の従来例(2) においては、
被検眼と視標との実際の距離を少しずつ変化させて測定
を行っているので、変更する距離範囲が制限され同様に
測定に時間が掛かり、装置が複雑な構成となる。
(B) Further, in the above-mentioned conventional example (2),
Since the measurement is performed while gradually changing the actual distance between the eye to be inspected and the optotype, the range of distance to be changed is limited, and the measurement also takes time, and the device has a complicated configuration.

【0009】(ハ) 上述の従来例(3) においては、度数の
異なるプリズムを1個ずつ入れ換えて被検者の応答を求
めながら斜位の測定を行っているので、同様に測定に非
常な時間が掛かり正確な測定が難しい。
(C) In the above-mentioned conventional example (3), prisms having different frequencies are replaced one by one and the oblique position is measured while obtaining the response of the subject. It takes time, and accurate measurement is difficult.

【0010】(ニ) 上述の従来例(4) においては、一度に
多数の視標を呈示するため被検者は指示された視標以外
のものが視野に入り、判断誤差が発生し判断にも時間が
掛かる。
(D) In the above-mentioned conventional example (4), a large number of optotypes are presented at one time, so that a subject other than the instructed optotypes enters the visual field, and a judgment error occurs and a judgment is made. Also takes time.

【0011】(ホ) 上述の従来例(5) においては、検者は
1回毎に被検者に視標を呈示し視度を変更して被検者の
応答を聞いて測定を行っているので、その都度視度調節
を行わなければならず、測定に非常に時間が掛かり測定
が煩雑となる。
(E) In the above-mentioned conventional example (5), the examiner presents the optotype to the examinee every time, changes the diopter, hears the examinee's response, and measures. Therefore, the diopter must be adjusted each time, and it takes a very long time to perform the measurement, and the measurement becomes complicated.

【0012】本発明の第1の目的は、上述の問題点(イ)
を解消し、短時間で正確に眼屈折値を測定することがで
き、技術に習熟していなくとも取り扱いが可能な検眼装
置を提供することにある。
The first object of the present invention is the above-mentioned problem (a).
It is an object of the present invention to provide an optometry apparatus that can solve the above problems and can accurately measure the eye refraction value in a short time, and that can be handled even if the user is not familiar with the technique.

【0013】本発明の第2の目的は、上述の問題点(ロ)
を解消し、視標を動かさずに測定できる簡素な構成の検
眼装置を提供することにある。
The second object of the present invention is the above-mentioned problem (b).
The object of the present invention is to provide an optometry apparatus having a simple configuration capable of performing measurement without moving the target.

【0014】本発明の第3の目的は、上述の問題点(ハ)
を解消し、短時間で正確に斜位の測定ができる検眼装置
を提供することにある。
The third object of the present invention is the above-mentioned problem (c).
An object of the present invention is to provide an optometry device capable of accurately measuring the oblique position in a short time.

【0015】本発明の第4の目的は、上述の問題点(ニ)
を解消し、短時間で正確に視力測定が可能な検眼装置を
提供することにある。
The fourth object of the present invention is to solve the above-mentioned problem (d).
SUMMARY OF THE INVENTION It is an object of the present invention to provide an optometry apparatus capable of accurately measuring visual acuity in a short time.

【0016】本発明の第5の目的は、上述の問題点(ホ)
を解消し、先の視標の視度に基づいて次の視度の視標を
設定できる検眼装置を提供することにある。
The fifth object of the present invention is to solve the above problems (e).
The object of the present invention is to provide an optometry device capable of solving the above problem and setting the optotype of the next diopter based on the diopter of the previous optotype.

【0017】[0017]

【課題を解決するための手段】上記目的を達成するため
の第1発明に係る検眼装置は、乱視度を含む視標視度可
変手段と、縞間隔可変の少なくとも3経線方向の縞パタ
ーンを表示する視標と、被検者応答手段と、前記視標を
視度を変えながら呈示したとき前記縞パターンのそれぞ
れに対して被検者が応答した視標視度に応じて前記視標
視度可変手段により前記視標の視度を変える制御手段と
を有することを特徴とする。
An eye examination apparatus according to a first aspect of the present invention for achieving the above object displays an index diopter varying means including astigmatism and a striped pattern in at least three meridian directions with variable striped intervals. The optotype, the subject responding means, and the optotype corresponding to the optotype that the subject responds to each of the stripe patterns when the optotype is presented while changing the diopter. And a control unit for changing the diopter of the optotype by a variable unit.

【0018】また、第2発明に係る検眼装置は、被検眼
から所定の距離に設けた視標と、プリズム度数可変手段
及びレンズ度数可変手段とを有し、これら2つの可変手
段を調節して見掛上複数の距離に前記視標を呈示可能と
したことを特徴とする。
The optometry apparatus according to the second aspect of the invention has an optotype provided at a predetermined distance from the eye to be inspected, a prism dioptric power varying means and a lens dioptric power varying means, and these two varying means are adjusted. It is characterized in that the visual target can be presented at a plurality of apparent distances.

【0019】第3発明に係る検眼装置は、プリズム度数
可変手段と、左右眼に別々のパターンを呈示する視標手
段と、被検者応答手段と、該応答手段により前記プリズ
ム度数可変手段のプリズム度数を制御する制御手段とを
有することを特徴とする。
In the eye examination apparatus according to the third aspect of the invention, the prism power varying means, the optotype means for presenting different patterns to the left and right eyes, the subject responding means, and the prism of the prism power varying means by the responding means. And a control means for controlling the frequency.

【0020】第4発明に係る検眼装置は、文字視標の大
きさを変化させる視標手段と、被検者応答手段と、応答
時の文字視標の大きさから視力を決定する制御手段とを
有することを特徴とする。
An optometry apparatus according to a fourth aspect of the present invention comprises an optotype means for changing the size of a character optotype, a subject responding means, and a control means for determining visual acuity from the size of the character optotype at the time of response. It is characterized by having.

【0021】第5発明に係る検眼装置は、視度可変な視
標手段と、被検者応答手段と、視度を変えながら視標を
呈示し応答のあったときの視標の視度に基づき次の呈示
視標の視度を決めることを特徴とする。
The optometry apparatus according to the fifth aspect of the present invention includes a diopter variable index means, a subject responding means, and a diopter index when a diopter is changed and a response is presented. It is characterized in that the diopter of the next target to be presented is determined based on this.

【0022】[0022]

【作用】上述の構成を有する第1発明の検眼装置は、縞
間隔可変の少なくとも3方向の縞パターンを表示する視
標を、視度を逐次に変化させながら被検者に呈示し、被
検者は応答手段により応答を行う。被検者が応答した縞
パターンそれぞれに対する視度に応じて、次に呈示する
視標の視度を変更するように視標視度可変手段を制御す
る。
The optometer according to the first aspect of the present invention, which has the above-described structure, presents the optotype displaying the stripe pattern in at least three directions with variable stripe intervals to the subject while sequentially changing the diopter. The person responds by the response means. The optotype diopter varying means is controlled so as to change the diopter of the optotype to be presented next according to the diopter of each of the stripe patterns to which the subject responds.

【0023】また、第2発明の検眼装置は、所定距離に
配置した視標を被検眼に呈示し、プリズム度数可変手段
とレンズ度数可変手段を調節することにより、視標を見
掛上複数の距離に呈示するように制御する。
In the eye examination apparatus of the second invention, the optotypes arranged at a predetermined distance are presented to the eye to be inspected, and the prism dioptric power varying means and the lens dioptric power varying means are adjusted so that a plurality of the optotypes are apparently used. It is controlled so that it is presented in the distance.

【0024】第3発明の検眼装置は、視標手段により被
検者の左右眼に別々のパターンの視標を呈示し、被検者
が応答手段により行う応答に従って、左右眼のずれが無
くなるようにプリズム度数可変手段のプリズム度を変更
する制御を行う。
In the optometry apparatus of the third invention, the optotype means presents different patterns of optotypes to the left and right eyes of the subject, and the displacement of the left and right eyes is eliminated according to the response made by the subject by the response means. The control for changing the prism power of the prism power changing means is performed.

【0025】第4発明の検眼装置は、視標手段により文
字視標を被検者に呈示し、文字視標の寸法を徐々に大き
く変化させる。制御手段は被検者が応答手段により応答
した時の文字視標の大きさから被検者の視力を決定す
る。
In the eye examination apparatus of the fourth invention, the character optotype is presented to the subject by the optotype means, and the size of the character optotype is gradually changed. The control means determines the visual acuity of the subject based on the size of the character optotype when the subject responds by the response means.

【0026】第5発明の検眼装置は、視標手段により視
度を変更しながら被検者に呈示し、被検者が応答手段に
より行う応答時の視標の視度に基づいて、次に呈示する
視標の視度を決定する。
The optometry apparatus of the fifth invention presents the diopter to the subject while changing the diopter by the optotype means, and then based on the diopter of the optotype at the time of response by the examinee, Determine the diopter of the target to be presented.

【0027】[0027]

【実施例】本発明を図示の実施例に基づいて詳細に説明
する。図1は第1の実施例の構成図を示し、眼屈折力や
視力等を片眼ずつ測定することができる。被検者Sの左
右眼EL、ERのそれぞれの前面に、球面円柱レンズ度数と
円柱角度を可変するホロプタ1L、1R、プリズム度数
と角度を可変する回転プリズム2L、2R、高速で時分
割可能の液晶シャッタ3L、3R、回転軸4aを中心に
回転して光路に挿脱可能なレンズ4、画像表示用の液晶
板5、液晶板5を背後から照明する光源6が順次に配列
されており、液晶板5の周りには偏光性のない周辺視標
7が設けられ、この周辺視標7を照明する光源8が液晶
板5の前方に配置されている。
DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be described in detail based on the illustrated embodiments. FIG. 1 is a block diagram of the first embodiment, in which eye refractive power, visual acuity, etc. can be measured for each eye. In front of each of the left and right eyes EL and ER of the subject S, the holopters 1L and 1R that change the spherical cylindrical lens power and the cylindrical angle, the rotating prisms 2L and 2R that change the prism power and the angle, and high-speed time division are possible. Liquid crystal shutters 3L and 3R, a lens 4 that is rotatable about a rotation axis 4a and that can be inserted into and removed from an optical path, a liquid crystal plate 5 for image display, and a light source 6 that illuminates the liquid crystal plate 5 from behind are sequentially arranged. A non-polarizing peripheral target 7 is provided around the liquid crystal plate 5, and a light source 8 for illuminating the peripheral target 7 is arranged in front of the liquid crystal plate 5.

【0028】また、被検者Sの付近に視標を視認して応
答を行う応答手段9が設けられ、応答手段9、ホロプタ
1L、1R、回転プリズム2L、2R、液晶シャッタ3
L、3R、液晶板5は信号線10を介して制御手段11
に接続され、制御手段11には視標パターンを液晶板5
に発生する記号発生器12が設けられている。
In addition, a response means 9 is provided near the subject S for visually recognizing a target and responding, and the response means 9, the horopters 1L and 1R, the rotating prisms 2L and 2R, and the liquid crystal shutter 3 are provided.
The L, 3R, and liquid crystal plates 5 are controlled by a control means 11 via a signal line 10.
The control means 11 is connected to the liquid crystal plate 5 with the optotype pattern.
There is provided a symbol generator 12 for

【0029】記号発生器12からは視標パターンが発生
され、光源6で照明された液晶板5に表示されて視標と
なる。この視標はレンズ4により見掛け上遠方となる。
左右眼用の視標パターンが交互に発生され、同期する液
晶シャッタ3L、3Rにより高速で時分割されて左右眼
EL、ERにより交互にそれぞれの視標パターンが観察され
る。そして、被検者Sは視標が見えたとき応答手段9で
応答する。
A target pattern is generated from the symbol generator 12 and displayed on the liquid crystal plate 5 illuminated by the light source 6 to become a target. This target is apparently distant due to the lens 4.
The optotype patterns for the left and right eyes are generated alternately, and are time-divided at high speed by the synchronized liquid crystal shutters 3L and 3R to enable the left and right eyes to be separated.
Each target pattern is observed alternately by EL and ER. Then, the subject S responds with the response means 9 when the target is visible.

【0030】近距離検査のときはレンズ4を回転軸4a
を中心にして点線位置に回転する。液晶板5は被検眼E
から30cm〜40cmの位置に設定されている。近距
離検査では目的に応じて20cm〜40cm程度の間で
距離を変える必要があり、この距離の変更はホロプタ1
L、1Rの中の球面レンズと回転プリズム2L、2Rの
組合わせにより行う。即ち、ホロプタ1L、1Rの球面
レンズで見掛け上の距離を調節し、回転プリズム2L、
2Rで被検眼Eの輻輳を調節し、この組合わせを制御手
段11で計算して制御する。更に、この球面レンズの付
加により生じた視力測定視標の大きさの変化は、制御手
段11で視標の表示の大きさを調節することにより、被
検眼から見掛けが一定となるように補正する。
For short-range inspection, the lens 4 is attached to the rotary shaft 4a.
Rotate to the dotted line position around. The liquid crystal plate 5 is the eye E to be inspected.
From 30 cm to 40 cm. In the short-range inspection, it is necessary to change the distance between 20 cm and 40 cm depending on the purpose.
This is performed by combining the spherical lens in L and 1R with the rotating prisms 2L and 2R. That is, the apparent distance is adjusted by the spherical lenses of the horopters 1L and 1R, and the rotary prism 2L and
2R adjusts the vergence of the eye E, and the control means 11 calculates and controls this combination. Further, a change in the size of the visual acuity measurement target caused by the addition of the spherical lens is corrected by adjusting the display size of the target by the control means 11 so that the appearance is constant from the eye to be examined. .

【0031】なお、レンズ4を実線の位置のままにし
て、ホロプタ1L、1Rの球面レンズのレンズ度数と回
転プリズム2L、2Rのプリズム度数により、視度と輻
輳が近距離検査の場合と同じになるように調節してもよ
い。このようにすれば、遠方から近方までの間で連続的
に距離を変化させて検査を行うことができる。この際に
生ずる寄り目による瞳孔間距離の変化は、ホロプタ1
L、1Rの眼幅を制御手段11で自動的に演算を行い、
図示しない駆動手段で駆動して補正するようにする。
With the lens 4 left in the position shown by the solid line, the diopter and the convergence are the same as in the case of the short-distance inspection, depending on the lens powers of the spherical lenses of the horopters 1L and 1R and the prism powers of the rotating prisms 2L and 2R. You may adjust so that. In this way, the inspection can be performed by continuously changing the distance from the distant to the near. The change in interpupillary distance due to the cross-eyed eye generated at this time is
The control means 11 automatically calculates the eye widths of L and 1R,
The driving means (not shown) is used for correction.

【0032】図2(a) 〜(e) は屈折力測定用の3方向の
縞パターンを示し、先ず被検者Sの屈折力と視力が全く
分からない場合は、視力0.5程度の1方向の縞を見
せ、ホロプタ1L、1Rの視度を+20D(ディオプ
タ)から徐々にマイナス側に変える。被検者Sは縞パタ
ーンが見えたとき、応答手段9の釦を押すように指示さ
れる。なお、この指示は検者が行ってもよいし、プログ
ラムに従って合成音声で行ってもよい。例えば、−3.
0Dで応答があれば縞パターンを視力0.7に変えて、
−3.0Dから1.0D程度プラス側、即ち−2.0D
からまた徐々にマイナス側に視標の視度を変える。次
に、−3.5Dで応答があれば視力1.0に相当する縞
パターンに変え、−2.5Dから始めて応答があれば、
更に細い縞パターンに変えて応答が無くなるまで続け
る。この視標視度の設定は制御手段11がプログラムに
従って自動的に行い、応答があった最も細い縞パターン
からその経線方向の視力と屈折力が決定される。
FIGS. 2 (a) to 2 (e) show three-direction stripe patterns for measuring the refractive power. First, if the refractive power and the visual acuity of the subject S are completely unknown, the visual acuity is about 0.5. Showing the stripes in the direction, gradually change the diopter of the horopters 1L and 1R from + 20D (diopter) to the minus side. The subject S is instructed to press the button of the response means 9 when the stripe pattern is seen. It should be noted that this instruction may be given by the examiner or may be given by a synthesized voice according to the program. For example, -3.
If there is a response at 0D, change the stripe pattern to 0.7,
-3.0D to 1.0D plus side, namely -2.0D
Then, gradually change the diopter of the target toward the negative side. Next, if there is a response at -3.5D, change to a stripe pattern corresponding to a visual acuity of 1.0, and if there is a response starting from -2.5D,
Change to a thinner stripe pattern and continue until there is no response. The control means 11 automatically sets the optotype according to a program, and the visual acuity and the refractive power in the meridian direction are determined from the thinnest striped pattern that responds.

【0033】このような1方向の測定の後に、他の2方
向に付いても同様に操作し、最も細い縞パターンで視標
視度をプラス側から動かしていき、応答のあったときの
視標視度から屈折力と視力を決定し、これら3方向で測
定した3経線の屈折力から乱視を含む屈折値を算出す
る。以上の一連の工程は、制御手段11により自動的に
行われ、被検者Sは縞パターンが見える毎に応答手段9
の釦を押すだけでよい。従って、検者がいなくとも若干
の指示を与えることにより、被検者Sは単独でも十分に
測定することができる。
After such measurement in one direction, the same operation is performed for the other two directions, and the index diopter is moved from the plus side in the thinnest striped pattern, and when the response is obtained, The refractive power and visual acuity are determined from the diopter, and the refractive value including astigmatism is calculated from the refractive powers of the three meridians measured in these three directions. The series of steps described above is automatically performed by the control means 11, and the subject S responds to the response means 9 every time the stripe pattern is seen.
All you have to do is press the button. Therefore, by giving some instructions even if there is no examiner, the examinee S can perform sufficient measurement alone.

【0034】算出された屈折値に従って球面度数と円柱
度数をホロプタ1L、1Rにセットし、この状態で制御
手段11により記号発生器12を制御して、ランドルト
環や文字を液晶板5に出して視力測定を行うことができ
る。例えば、図3に示すように「ア」という文字を(a)
→(b) →(c) に従って徐々大きくして表示し、被検者S
は見えたときに応答手段9により応答する。そして、こ
のときの文字の大きさから制御手段11により視力が決
定される。更に、この文字「ア」を別の文字に変更して
この測定を2〜3回繰り返し、これらの平均から視力を
決定するようにしてもよい。このようにして、非常に短
時間で視力測定を実施することができる。
The spherical power and the cylindrical power are set in the horopters 1L and 1R according to the calculated refraction values, and in this state, the control means 11 controls the symbol generator 12 to output the Landolt ring or characters to the liquid crystal plate 5. Visual acuity measurements can be made. For example, as shown in FIG.
→ (b) → (c)
Responds by the response means 9 when seen. Then, the visual acuity is determined by the control means 11 from the size of the character at this time. Further, this character "A" may be changed to another character, this measurement may be repeated 2-3 times, and the visual acuity may be determined from the average of these. In this way, the visual acuity measurement can be performed in a very short time.

【0035】図4は斜位測定の場合の視標を示し、ホロ
プタ1L、1Rの片眼にはマドックス桿を入れ、視標に
は(a) に示すように中心に赤点Pを出し、両眼で同時に
見えるようにシャッタ3L、3Rは両眼共に開放する。
マドックス桿の入ってる側は上下に像が延びて、(b) に
示すように垂直なバンドBが見えるが、斜位のある人が
見ると図4(c) に示すように赤点PとバンドBはずれて
見えるので、このずれが無くなるように被検者Sは応答
手段11のスイッチで回転プリズム2L、2Rを調節す
る。(d) に示すように重なって見える位置のプリズム度
によって、制御手段11は斜位の程度を決定して図示し
ないプリンタ等の適当な表示手段に表示する。従って、
検者が被検者Sに応答を求めながら、プリズム度を調節
する操作が必要なくなるので、非常に短い時間で測定を
行うことができる。
FIG. 4 shows an optotype in the case of oblique measurement. One of the horopters 1L and 1R has a Maddox rod, and the optotype has a red point P at the center as shown in (a). The shutters 3L and 3R are opened for both eyes so that they can be seen simultaneously by both eyes.
On the side with the Maddox rod, the image extends vertically, and a vertical band B can be seen as shown in (b), but when a person with an oblique view sees a red point P as shown in Fig. 4 (c). Since the band B appears to be deviated, the subject S adjusts the rotating prisms 2L and 2R with the switch of the response means 11 so as to eliminate this shift. As shown in (d), the control means 11 determines the degree of eccentricity according to the prismatic degree of the overlapping position, and displays it on an appropriate display means such as a printer (not shown). Therefore,
Since the examiner does not need to adjust the prism degree while seeking a response from the subject S, the measurement can be performed in a very short time.

【0036】図1の実施例では、偏光を使用して左右眼
が交互に視標像を見分けるようにしたが、偏光を使わず
に赤緑のフィルタを左右眼に配置してもよい。この場合
には、液晶板5はカラー表示用を使用し、片眼にしか呈
示しないときは赤か緑のパターンとし、両眼に呈示する
ときは白のパターンとする。例えば、図4の場合では、
白の点パターンを発生すると、点PとバンドBはそれぞ
れ赤と緑に見える。
In the embodiment of FIG. 1, the left and right eyes alternately distinguish the target images by using the polarized light, but red and green filters may be arranged in the left and right eyes without using the polarized light. In this case, the liquid crystal plate 5 is used for color display and has a red or green pattern when presented to only one eye, and a white pattern when presented to both eyes. For example, in the case of FIG.
When a white dot pattern is generated, point P and band B appear red and green, respectively.

【0037】図5は第2の実施例の構成図を示し、被検
眼Eの前方の光路上に、2枚の同じ円柱レンズから成る
クロスシリンダレンズ21、被検眼Eの瞳孔を前側焦点
位置とするレンズ22、図1と同様に視標となる液晶板
23が順次に配列されている。クロスシリンダレンズ2
1と液晶板23を動かすことにより、図1のホロプタ1
L、1Rと同様に、球面円柱レンズ度数、円柱角度を変
化させることができるようになっている。液晶板23に
は液晶板23を光軸に沿って移動させる駆動手段24が
連結されており、クロスシリンダレンズ21には駆動手
段25が連結されている。これらの駆動手段24、25
と図1と同様の応答手段26は電気的に制御手段27に
接続されている。なお、制御手段27は図1の制御手段
11と同様に、液晶板23にパターンを発生する記号発
生器が内蔵されている。
FIG. 5 is a block diagram of the second embodiment. In the optical path in front of the eye E to be inspected, a cross cylinder lens 21 composed of two identical cylindrical lenses, and the pupil of the eye E to be inspected as the front focus position. The lens 22 and the liquid crystal plate 23, which serves as a target as in FIG. 1, are sequentially arranged. Cross cylinder lens 2
1 and the liquid crystal plate 23 are moved, the horopter 1 of FIG.
Similar to L and 1R, the spherical cylindrical lens power and the cylindrical angle can be changed. Driving means 24 for moving the liquid crystal plate 23 along the optical axis is connected to the liquid crystal plate 23, and driving means 25 is connected to the cross cylinder lens 21. These drive means 24, 25
The response means 26 similar to that of FIG. 1 is electrically connected to the control means 27. The control means 27 has a built-in symbol generator for generating a pattern on the liquid crystal plate 23, like the control means 11 of FIG.

【0038】制御手段27は記号発生器から発生された
視標パターンを液晶板23に表示し、被検眼Eはこの液
晶板23の視標パターンをクロスシリンダレンズ21、
レンズ22を介して観察し、駆動手段25を駆動して液
晶板23を移動して視度調節を行う。被検眼Eの瞳孔位
置とレンズ22の前側焦点位置を一致させているので、
視標の見掛けの大きさが視度によって変化することはな
い。
The control means 27 displays the optotype pattern generated by the symbol generator on the liquid crystal plate 23, and the eye E to be examined crosses the optotype pattern of the liquid crystal plate 23 to the cross cylinder lens 21,
Observing through the lens 22, the driving means 25 is driven to move the liquid crystal plate 23 to adjust the diopter. Since the pupil position of the eye E to be inspected and the front focus position of the lens 22 are matched,
The apparent size of the target does not change with diopter.

【0039】[0039]

【発明の効果】以上説明したように第1発明に係る検眼
装置は、被検者が応答したときの縞パターンの視度に基
づいて次に呈示する縞パターン視度を制御することによ
り、短時間で正確な検眼測定を行うことができ、専門知
識が無くても自覚検眼が可能となる。
As described above, the optometry apparatus according to the first aspect of the present invention controls the stripe pattern diopter to be presented next based on the diopter of the stripe pattern when the subject responds. Accurate optometry measurement can be performed in time, and subjective optometry can be performed without specialized knowledge.

【0040】また、第2発明に係る検眼装置は、プリズ
ム度数とレンズ度数を調節して見掛けの距離を変えるこ
とにより、複数の距離で検眼を行っても視標の位置を動
かすことがないので、装置が簡素な構成となる。
Further, in the eye examination apparatus according to the second aspect of the present invention, the position of the optotype does not move even if eye examination is performed at a plurality of distances by adjusting the prism power and the lens power to change the apparent distance. The device has a simple structure.

【0041】第3発明に係る検眼装置は、左右眼に別々
の視標パターンを呈示し、被検者が応答手段によりプリ
ズム度数を変化させることにより斜位の測定ができ、検
者が被検者の応答に応じてプリズム度数を調節するとい
う作業が不要となり、短時間で簡便に視力測定を行うこ
とができる。
The optometry apparatus according to the third invention presents different optotype patterns for the left and right eyes, and the subject can measure the oblique position by changing the prism power by the response means. The work of adjusting the prism power according to the person's response becomes unnecessary, and the visual acuity can be easily measured in a short time.

【0042】第4発明に係る検眼装置は、文字視標を徐
々に大きくしながら呈示し、被検者が応答する大きさの
文字視標から視力が決定できるので、被検者が単独で簡
便に視力測定ができ測定時間が短縮される。
In the eye examination apparatus according to the fourth aspect of the present invention, the character optotype is presented while gradually increasing, and the visual acuity can be determined from the character optotype of the size to which the examinee responds. The visual acuity can be measured and the measuring time can be shortened.

【0043】第5発明に係る検眼装置は、視標手段の視
度を変えながら視標を呈示し、応答時の視度に基づいて
次の視標の視度を決めることにより、極めて簡素な構成
により自動視力測定を行うことができる。
The optometry apparatus according to the fifth aspect of the invention presents the optotype while changing the diopter of the optotype means, and determines the diopter of the next optotype based on the diopter at the time of response, which is extremely simple. The configuration allows automatic visual acuity measurement.

【図面の簡単な説明】[Brief description of drawings]

【図1】第1の実施例の構成図である。FIG. 1 is a configuration diagram of a first embodiment.

【図2】縞パターン視標の説明図である。FIG. 2 is an explanatory diagram of a striped pattern optotype.

【図3】視力測定用視標の説明図である。FIG. 3 is an explanatory diagram of a visual target for measuring visual acuity.

【図4】斜位視標の説明図である。FIG. 4 is an explanatory diagram of an oblique target.

【図5】第2の実施例の構成図である。FIG. 5 is a configuration diagram of a second embodiment.

【符号の説明】[Explanation of symbols]

1L、1R ホロプタ 2L、2R 回転プリズム 3L、3R 液晶シャッタ 4 レンズ 5、23 液晶板 7 周辺視標 9、26 応答手段 11、27 制御手段 12 記号発生器 21 クロスシリンダレンズ 1L, 1R Holopter 2L, 2R Rotating prism 3L, 3R Liquid crystal shutter 4 Lens 5,23 Liquid crystal plate 7 Peripheral target 9,26 Responsive means 11,27 Control means 12 Symbol generator 21 Cross cylinder lens

Claims (5)

【特許請求の範囲】[Claims] 【請求項1】 乱視度を含む視標視度可変手段と、縞間
隔可変の少なくとも3経線方向の縞パターンを表示する
視標と、被検者応答手段と、前記視標を視度を変えなが
ら呈示したとき前記縞パターンのそれぞれに対して被検
者が応答した視標視度に応じて前記視標視度可変手段に
より前記視標の視度を変える制御手段とを有することを
特徴とする検眼装置。
1. A target diopter variable means including astigmatism, a target for displaying a stripe pattern in at least three meridian directions with variable stripe intervals, a subject responding means, and the diopter for changing the diopter. While having a control means for changing the diopter of the optotype by the optotype diopter varying means according to the optotype diopter responded by the subject to each of the stripe patterns when presented. Optometry device.
【請求項2】 被検眼から所定の距離に設けた視標と、
プリズム度数可変手段及びレンズ度数可変手段とを有
し、これら2つの可変手段を調節して見掛上複数の距離
に前記視標を呈示可能としたことを特徴とする検眼装
置。
2. A target provided at a predetermined distance from the eye to be inspected,
An optometry apparatus comprising: a prism dioptric power varying means and a lens dioptric power varying means, wherein these two varying means are adjusted so that the optotype can be presented at a plurality of apparent distances.
【請求項3】 プリズム度数可変手段と、左右眼に別々
のパターンを呈示する視標手段と、被検者応答手段と、
該応答手段により前記プリズム度数可変手段のプリズム
度数を制御する制御手段とを有することを特徴とする検
眼装置。
3. A prism dioptric power varying means, an optotype means for presenting different patterns to the left and right eyes, and a subject responding means,
An optometry apparatus comprising: a control unit that controls the prism power of the prism power changing unit by the response unit.
【請求項4】 文字視標の大きさを変化させる視標手段
と、被検者応答手段と、応答時の文字視標の大きさから
視力を決定する制御手段とを有することを特徴とする検
眼装置。
4. An optotype means for changing the size of the character optotype, a subject response means, and a control means for determining visual acuity from the size of the character optotype at the time of response. Optometry device.
【請求項5】 視度可変な視標手段と、被検者応答手段
と、視度を変えながら視標を呈示し応答のあったときの
視標の視度に基づき次の呈示視標の視度を決めることを
特徴とする検眼装置。
5. A diopter-variable optotype means, a subject responding means, and a next presented optotype based on the diopter of the optotype presenting a response while changing the diopter. An optometry device characterized by determining diopter.
JP6335026A 1994-12-19 1994-12-19 Optometry apparatus Pending JPH08168466A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP6335026A JPH08168466A (en) 1994-12-19 1994-12-19 Optometry apparatus

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP6335026A JPH08168466A (en) 1994-12-19 1994-12-19 Optometry apparatus

Publications (1)

Publication Number Publication Date
JPH08168466A true JPH08168466A (en) 1996-07-02

Family

ID=18283917

Family Applications (1)

Application Number Title Priority Date Filing Date
JP6335026A Pending JPH08168466A (en) 1994-12-19 1994-12-19 Optometry apparatus

Country Status (1)

Country Link
JP (1) JPH08168466A (en)

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WO2010105370A1 (en) * 2009-03-20 2010-09-23 Jocelyn Faubert Device and method for measuring mild perceptual impairment
JP2014018422A (en) * 2012-07-18 2014-02-03 Topcon Corp Subjective optometer
CN110353623A (en) * 2019-08-16 2019-10-22 江苏悠享颐生健康科技有限公司 A kind of quantitative detection vision fine-tunes device and the application of ability
JP2023515716A (en) * 2020-04-29 2023-04-13 カール ツァイス ヴィジョン インターナショナル ゲーエムベーハー Method and apparatus for determining refractive error

Cited By (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2008036002A (en) * 2006-08-03 2008-02-21 Topcon Corp Subjective ophthalmic device
JP2010082253A (en) * 2008-09-30 2010-04-15 Nidek Co Ltd Visual target presenting apparatus
WO2010105370A1 (en) * 2009-03-20 2010-09-23 Jocelyn Faubert Device and method for measuring mild perceptual impairment
EP2408373A1 (en) * 2009-03-20 2012-01-25 Jocelyn Faubert Device and method for measuring mild perceptual impairment
CN102427766A (en) * 2009-03-20 2012-04-25 瓦洛里萨申-雷彻切有限合伙公司 Device and method for measuring mild perceptual impairment
JP2012520691A (en) * 2009-03-20 2012-09-10 ジョセリン・フォベール Device and method for measuring mild sensory impairment
EP2408373A4 (en) * 2009-03-20 2014-11-19 Jocelyn Faubert Device and method for measuring mild perceptual impairment
US10485466B2 (en) 2009-03-20 2019-11-26 Cognisens Inc. Device and method for measuring mild perceptual impairment
JP2014018422A (en) * 2012-07-18 2014-02-03 Topcon Corp Subjective optometer
CN110353623A (en) * 2019-08-16 2019-10-22 江苏悠享颐生健康科技有限公司 A kind of quantitative detection vision fine-tunes device and the application of ability
JP2023515716A (en) * 2020-04-29 2023-04-13 カール ツァイス ヴィジョン インターナショナル ゲーエムベーハー Method and apparatus for determining refractive error

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