JPS6321034A - Sight examination apparatus - Google Patents
Sight examination apparatusInfo
- Publication number
- JPS6321034A JPS6321034A JP61165311A JP16531186A JPS6321034A JP S6321034 A JPS6321034 A JP S6321034A JP 61165311 A JP61165311 A JP 61165311A JP 16531186 A JP16531186 A JP 16531186A JP S6321034 A JPS6321034 A JP S6321034A
- Authority
- JP
- Japan
- Prior art keywords
- optotype
- pattern
- patterns
- visual acuity
- liquid crystal
- 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.)
- Granted
Links
- 238000012360 testing method Methods 0.000 claims description 15
- 239000004973 liquid crystal related substance Substances 0.000 claims description 14
- 230000004304 visual acuity Effects 0.000 claims description 12
- 238000007689 inspection Methods 0.000 description 5
- 238000000034 method Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000004438 eyesight Effects 0.000 description 1
Landscapes
- Eye Examination Apparatus (AREA)
Abstract
(57)【要約】本公報は電子出願前の出願データであるた
め要約のデータは記録されません。(57) [Abstract] This bulletin contains application data before electronic filing, so abstract data is not recorded.
Description
【発明の詳細な説明】
［産業上の利用分野コ
未発明は、眼科医院等で使用するのシこ好適な視力検査
装置に関するものである。DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a visual acuity testing device suitable for use in eye clinics and the like.
［従来の技術］
従来、液晶視標パターンを順次に呈示する視力検査袋と
では、検査に用いる視標パターンを明瞭にするために、
検査が終った視標パターンを消した後に又は消すと同時
に、次に検査すべき視標パターンを呈示している。しか
し、この方式では新しい視標パターンが呈示される際に
、注目している視標パターンが消えてしまうために、目
のフ、１．％点の調節が不安定になり易い欠点がある。[Prior Art] Conventionally, in a vision test bag that sequentially presents liquid crystal optotype patterns, in order to make the optotype pattern used for the test clear,
After or at the same time as erasing the target pattern that has been inspected, the target pattern to be examined next is presented. However, in this method, when a new optotype pattern is presented, the optotype pattern that is being focused on disappears, so that the eyes are closed.1. There is a drawback that the adjustment of the percentage points tends to be unstable.
［発明の目的］
本発明の目的は、液晶視標パターンの呈示をすｊり換え
る際に、切り換える時に２つのパターンを共に呈示する
時間を設けたことにより、目の：Ａ節を助は安定した視
力検査が行える視力検査装置を提供することにある。[Objective of the Invention] The object of the present invention is to stabilize the A-section of the eye by providing time for presenting two patterns together when switching the presentation of the liquid crystal optotype pattern. It is an object of the present invention to provide a visual acuity test device that can perform a visual acuity test using the following methods.
［発明の概要コ
上述の目的を達成するための本発明の要旨は、複数個の
視標パターンを有する視標呈示手段と、前記視標パター
ンを個々に表示し、前記視標パターンの呈示を切り換え
る際に目調節用パターンを次に表示する視標パターンと
共に一時的に呈示する制御手段とを有することを特徴と
する視力検査装置である。[Summary of the Invention] The gist of the present invention for achieving the above-mentioned object is to provide an optotype presenting means having a plurality of optotype patterns, displaying the optotype patterns individually, and displaying the optotype patterns. A visual acuity testing device characterized by having a control means for temporarily presenting an eye adjustment pattern together with an optotype pattern to be displayed next when switching.
［発明の実施例］ 本発明を図示の実施例に基づいて詳細に説明する。[Embodiments of the invention] The present invention will be explained in detail based on illustrated embodiments.
第１図において、Ｓは被検眼であり、検査視標パターン
の表示を行う液晶板ｌには、複ａ個の例えばランドルト
環から成る液晶視標パターンが形成されている。呈示す
るべき視標パターンを視標呈示入力部２から指定すると
、液晶表示制御手段３を介してその視標パターンを液晶
板１に呈示するようになっている。視標呈示入力部２へ
の入力は検者からの入力、或いはマイクロプロセッサか
らの出力により制御され、視力検査が終了するまで順次
に視標パターンの呈示が行われるように視標呈示入力部
２から入力が行われる。In FIG. 1, S denotes the eye to be examined, and a liquid crystal plate l for displaying a test optotype pattern is formed with a liquid crystal optotype pattern consisting of a plurality of, for example, Landolt rings. When the optotype pattern to be presented is designated from the optotype presentation input section 2, the optotype pattern is presented on the liquid crystal panel 1 via the liquid crystal display control means 3. Input to the optotype presentation input section 2 is controlled by input from the examiner or output from the microprocessor, and the optotype presentation input section 2 is controlled so that the optotype patterns are sequentially presented until the visual acuity test is completed. Input is performed from
第２図〜第４図は液晶板１の動作の説明のための正面図
である。液晶板１には個々に大きさの異なる液晶視標パ
ターンＰＩ−ＰＧが設けられており、検査は第２図−第
３図→第４図の状態に移行される。つまり、第２図は視
標パターンＰ２を検査している状態であり、第３図は視
標パターンＰ２の検査が終り視標パターンＰ４の検査に
移行する際の状態を示し、液晶表示制御手段３により視
標パターンＰ２、Ｐ４が共に呈示されるように制御され
る。第３図に示すように、呈示が切り換わる前後の視標
パターンＰ２、Ｐ４を共に呈示する時間を設けると、被
検者は焦点の［ｉを行う目標を見失うことがなく、視標
パターンの呈示が切り換わるごとに焦点の調節を行う必
要がなくなる。なお、この２つの視標パターンＰ２、Ｐ
４を共に表示する時間は、０．１〜０．２秒程度が最適
である。また、第４図は第３図を経て視標パターンＰ４
による検査を行っている状態である。2 to 4 are front views for explaining the operation of the liquid crystal plate 1. FIG. The liquid crystal plate 1 is provided with liquid crystal optotype patterns PI to PG each having a different size, and the inspection is shifted from the state shown in FIGS. 2-3 to FIG. 4. That is, FIG. 2 shows the state in which the optotype pattern P2 is being inspected, and FIG. 3 shows the state when the inspection of the optotype pattern P2 is completed and the inspection moves on to the inspection of the optotype pattern P4. 3, the optotype patterns P2 and P4 are controlled to be presented together. As shown in Fig. 3, if time is provided to present the optotype patterns P2 and P4 together before and after the presentation is switched, the subject will not lose sight of the target to perform [i] in focus, and will be able to There is no need to adjust the focus every time the presentation changes. Note that these two target patterns P2 and P
The optimal time for displaying 4 together is approximately 0.1 to 0.2 seconds. In addition, Fig. 4 shows the optotype pattern P4 after passing through Fig. 3.
The company is currently undergoing an inspection.
なお実施例においては、口調節用パターンを前回に表示
した視標パターンを用いたが、視標パターンとは別個の
独立したパターンとしてもよいことは勿論である。また
視標パターンの切り換え時において、独立した口調節用
パターンは次に表示すべき視標パターンと共に表示する
前に、前回表示した視標パターンと共に一時的に表示す
るようにしてもよい。In the embodiment, the previously displayed optotype pattern was used as the mouth adjustment pattern, but it goes without saying that it may be an independent pattern separate from the optotype pattern. Further, when switching the optotype pattern, the independent mouth adjustment pattern may be temporarily displayed together with the previously displayed optotype pattern before being displayed together with the optotype pattern to be displayed next.
［発明の効果］
以上説明したように本発明に係る視力検査装置は、呈示
を切り換え時に２つのパターンを共に呈示する時間を設
けたことにより、被検者が視力検査を行う際の目の調節
を助け、安定した視力検査を行うことを可能にしている
。[Effects of the Invention] As explained above, the visual acuity testing device according to the present invention provides a time period for presenting two patterns together when switching the presentation, thereby improving eye adjustment when the subject performs the visual acuity test. This makes it possible to perform stable visual acuity tests.
図面は本発明に係る視力検査装置の一実施例を示し、第
１図はその配置図、第２図〜第４図は液晶板の正面図で
ある。
符号ｌは液晶板、２は視標呈示入力部、３は液晶表示制
御手段１．２１〜Ｐ６は液晶視標パターンである。The drawings show an embodiment of the visual acuity testing device according to the present invention, with FIG. 1 being a layout diagram thereof, and FIGS. 2 to 4 being front views of a liquid crystal plate. Reference numeral 1 denotes a liquid crystal plate, 2 an optotype presentation input section, and 3 a liquid crystal display control means 1.21 to P6 are liquid crystal optotype patterns.
Claims (1)
記視標パターンを個々に表示し、前記視標パターンの呈
示を切り換える際に目調節用パターンを次に表示する視
標パターンと共に一時的に呈示する制御手段とを有する
ことを特徴とする視力検査装置。 ２、前記目調節用パターンは前回表示の視標パターンを
兼用した特許請求の範囲第１項に記載の視力検査装置。 ３、前記視標パターンは液晶から成る特許請求の範囲第
１項に記載の視力検査装置。[Scope of Claims] 1. An optotype presenting means having a plurality of optotype patterns, displaying the optotype patterns individually, and displaying an eye adjustment pattern next when switching presentation of the optotype patterns; A visual acuity testing device comprising: a control means for temporarily presenting an optotype pattern together with an optotype pattern. 2. The visual acuity testing device according to claim 1, wherein the eye adjustment pattern also serves as the previously displayed optotype pattern. 3. The visual acuity testing device according to claim 1, wherein the optotype pattern is made of liquid crystal.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP61165311A JPH0624506B2 (en) | 1986-07-14 | 1986-07-14 | Visual acuity test equipment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP61165311A JPH0624506B2 (en) | 1986-07-14 | 1986-07-14 | Visual acuity test equipment |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS6321034A true JPS6321034A (en) | 1988-01-28 |
| JPH0624506B2 JPH0624506B2 (en) | 1994-04-06 |
Family
ID=15809919
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP61165311A Expired - Fee Related JPH0624506B2 (en) | 1986-07-14 | 1986-07-14 | Visual acuity test equipment |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0624506B2 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2008023129A (en) * | 2006-07-21 | 2008-02-07 | Nidek Co Ltd | Visual target presentation apparatus |
-
1986
- 1986-07-14 JP JP61165311A patent/JPH0624506B2/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2008023129A (en) * | 2006-07-21 | 2008-02-07 | Nidek Co Ltd | Visual target presentation apparatus |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0624506B2 (en) | 1994-04-06 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| LAPS | Cancellation because of no payment of annual fees |