JPH1085181A5

JPH1085181A5 -

Info

Publication number: JPH1085181A5
Application number: JP1996247559A
Authority: JP
Filing date: 1996-09-19
Publication date: 2004-09-30

Description

【０００８】
【課題を解決するための手段】
第１発明は、左右の眼特性を自覚的に測定する器械と、制御部と、近用測定のために該器械の視軸を輻輳させる輻輳手段と、電動で視力表を選択する近用視力表装置と、を有し、該制御部が左右の視軸を自動的に視力表に収斂するように該輻輳手段を制御する自覚式検眼装置において、
角膜に映った光によって瞳孔間距離を検出する瞳孔間距離測定部を有し、上記制御部が左右の視軸を自動的に視力表に収斂するように上記輻輳手段を制御する際に、上記瞳孔間距離測定部により検出された角膜の曲率中心による瞳孔間距離と収斂角度を補正制御することを特徴とする自覚式検眼装置である。[0008]
[Means for solving the problem]
The first invention is a subjective ophthalmology device comprising an instrument for subjectively measuring the characteristics of the left and right eyes, a control unit, convergence means for converging the visual axes of the instrument for near vision measurement, and a near vision chart device for electrically selecting a visual acuity chart, wherein the control unit controls the convergence means so that the left and right visual axes automatically converge on the visual acuity chart,
This subjective ophthalmology device has an interpupillary distance measuring unit that detects the interpupillary distance by light reflected on the cornea, and when the control unit controls the convergence means so that the left and right visual axes automatically converge on an eye chart, it corrects and controls the interpupillary distance and convergence angle based on the center of curvature of the cornea detected by the interpupillary distance measuring unit.

【０００９】
第２発明は、左右の眼特性を自覚的に測定する器械と、制御部と、近用測定のために該器械の視軸を輻輳させる輻輳手段と、電動で視力表を選択する近用視力表装置と、を有し、該制御部が左右の視軸を自動的に視力表に収斂するように該輻輳手段を制御する自覚式検眼装置において、
角膜に映った光によって瞳孔間距離を検出する瞳孔間距離測定部と、該近用視力表装置の視力表を選択する操作手段を有し、該操作手段により該視力表を選択すると、左右の視軸を自動的に視力表に収斂するように該輻輳手段を制御する際に、上記瞳孔間距離測定部により検出された角膜の曲率中心による瞳孔間距離と収斂角度を補正制御することを特徴とする自覚式検眼装置である。[0009]
The second invention is a subjective ophthalmology device comprising an instrument for subjectively measuring the characteristics of the left and right eyes, a control unit, convergence means for converging the visual axes of the instrument for near vision measurement, and a near vision chart device for electrically selecting a visual acuity chart, wherein the control unit controls the convergence means so that the left and right visual axes automatically converge to the visual acuity chart,
This subjective eye examination device has an interpupillary distance measuring unit that detects the interpupillary distance by light reflected on the cornea, and an operation means for selecting a vision chart for the near vision chart device, and when the vision chart is selected by the operation means, the convergence means is controlled so that the left and right visual axes automatically converge on the vision chart, and the interpupillary distance and convergence angle based on the center of curvature of the cornea detected by the interpupillary distance measuring unit are corrected and controlled.

【００１０】
【作用】
近用視力表装置の視力表が選択されると、制御部が近用視力表装置を、視力表の内容に応じた所定位置に移動させる。さらに、制御部が左右の視軸を自動的に視力表位置に収斂するように輻輳手段を制御する際に角膜の曲率中心による瞳孔間距離と収斂角度の補正制御もする。[0010]
[Effect]
When a vision chart for the near vision chart device is selected, the control unit moves the near vision chart device to a predetermined position according to the content of the vision chart. Furthermore, when the control unit controls the convergence means so that the left and right visual axes automatically converge to the vision chart position, it also controls the correction of the interpupillary distance and convergence angle according to the center of curvature of the cornea.

【００４２】
【発明の効果】
本発明は、以上説明したように構成されているので、視力表を選択するだけで、角膜の曲率中心による瞳孔間距離に基づく輻輳時の補正が自動的に行われる。[0042]
[Effects of the Invention]
Since the present invention is configured as described above, simply by selecting an eye chart, correction during convergence based on the interpupillary distance according to the center of curvature of the cornea is automatically performed.

Claims

A subjective ophthalmology device includes an instrument for subjectively measuring the characteristics of the left and right eyes, a control unit, convergence means for converging the visual axes of the instrument for near vision measurement, and a near vision chart device for electrically selecting a visual acuity chart, wherein the control unit controls the convergence means so that the left and right visual axes automatically converge to the visual acuity chart,
This subjective ophthalmology device has an interpupillary distance measuring unit that detects the interpupillary distance by light reflected on the cornea, and when the control unit controls the convergence means so that the left and right visual axes automatically converge on an eye chart, the control unit corrects and controls the interpupillary distance and convergence angle based on the center of curvature of the cornea detected by the interpupillary distance measuring unit.

A subjective ophthalmology device includes an instrument for subjectively measuring the characteristics of the left and right eyes, a control unit, convergence means for converging the visual axes of the instrument for near vision measurement, and a near vision chart device for electrically selecting a visual acuity chart, wherein the control unit controls the convergence means so that the left and right visual axes automatically converge to the visual acuity chart,
This subjective eye examination device has an interpupillary distance measuring unit that detects the interpupillary distance by light reflected on the cornea, and an operation means for selecting a vision chart of the near vision chart device, and when the vision chart is selected by the operation means, the convergence means is controlled so that the left and right visual axes automatically converge on the vision chart, and the interpupillary distance and convergence angle based on the center of curvature of the cornea detected by the interpupillary distance measuring unit are corrected and controlled.