JP2003265412A - Metamorphopsia testing chart - Google Patents
Metamorphopsia testing chartInfo
- Publication number
- JP2003265412A JP2003265412A JP2002074168A JP2002074168A JP2003265412A JP 2003265412 A JP2003265412 A JP 2003265412A JP 2002074168 A JP2002074168 A JP 2002074168A JP 2002074168 A JP2002074168 A JP 2002074168A JP 2003265412 A JP2003265412 A JP 2003265412A
- Authority
- JP
- Japan
- Prior art keywords
- chart
- metamorphopsia
- distorted
- retina
- degree
- 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
Links
Landscapes
- Eye Examination Apparatus (AREA)
Abstract
Description
【発明の詳細な説明】
【０００１】
【発明の属する技術分野】本発明は、眼科の医療機関等
において、変視症の検査を行う際に使用する検査用チャ
ートに関するものである。
【０００２】
【従来の技術】従来より、黄斑部等の疾患によって起こ
る変視症を診断するための検査表として、アムスラーチ
ャートと呼ばれる図３に示すような碁盤格子状の検査用
チャート５１が使用されている。
【０００３】この検査用チャート５１は、中心の固視標
５２から、上下方向および左右方向にそれぞれ視角２０
度の範囲において、視角１度毎に縦方向および横方向の
直線が表示されることによって正方形の格子が碁盤目状
に形成されたものである。網膜が浮腫等の影響で変形し
ている場合には、網膜に映る像が歪むことによって、直
線が歪んで見えるので、被検者が固視標５２の正面から
片眼ずつ垂直方向に検査用チャート５１を見て、直線が
歪んで見えるところがあるかどうか、また歪みの程度等
を調べることによって、変視症を診断する。
【０００４】しかしながら、変視症患者は多くの場合、
変視の程度が方向によって異なるため、図３の検査用チ
ャート５１のように正方形の碁盤目を形成する直線だけ
では、患者の症状によっては、検出されにくい場合があ
った。
【０００５】
【発明が解決しようとする課題】本発明は、上記の問題
点を解決するためになされたものであり、簡単な検査方
法によって、変視症を漏れなく検出できるような検査用
チャートを提供することを目的とする。
【０００６】
【課題を解決するための手段】そこで、本発明の検査用
チャートは、複数の直線が格子縞を形成するように配置
された変視症検査用チャートにおいて、眼の位置から見
て手前側から前方に向かって徐々に格子の面積が小さく
なるように遠近法によって格子縞が表示されたものとし
た。
【０００７】視点から見て縦方向の直線がそれぞれ異な
る角度を有しているので、変視症の程度や症状にかかわ
らず、検出されやすくなる。
【０００８】
【発明の実施の形態】本発明の実施の形態を図面に基づ
いて説明する。
【０００９】図１は本発明の実施の形態を示す検査用チ
ャート１であり、例えばＡ３版程度の大きさの厚紙や合
成樹脂製等のシートからなる版面１０に、遠近法によっ
て表示された格子縞３が印刷されている。
【００１０】格子縞３は、版面１０の短辺方向に表示さ
れる水平方向の複数の横線４と、長辺方向に表示されそ
れぞれ角度が異なる縦線５とで形成されている。横線４
は、検査時に眼の位置に対して手前側１１となる端が最
も長く、前方側１２に向かって徐々に短くなるととも
に、横線４同士の間隔が徐々に狭くなるように表示され
ている。また、縦線５は、横線４が短くなる割合に合わ
せてそれぞれ内側へ角度が設けられ、縦線５と横線４と
で形成される格子縞３が、遠近法によって前方へ向かっ
て徐々に小さくなるように表示されている。
【００１１】そして、検査用チャート１の中央には、固
視標２が表示されている。
【００１２】検査時には、図２に示すように、検査用チ
ャート１の手前側１１を被検者の眼９の方に向け、版面
１０を水平方向に保持して、被検者が固視標２を注視し
ながら検査用チャート１全体を見る。被検者の網膜に浮
腫等があって変形している場合には、直線が歪んで見え
るので、検者は、どの直線がどのように歪んで見えるか
を被検者から聞き出して、変視症の有無や程度を診断す
る。
【００１３】このような検査用チャート１では、縦線５
がそれぞれ異なる角度を有しているので、網膜の変形位
置に関係なく、変視症が検出されやすい。
【００１４】尚、検査用チャート１の横線４および縦線
５の長さや本数は、図１の例に限らないが、変視症を正
確に診断するためには、適宜長さの連続した直線による
網膜への刺激、複数種類の角度を有する縦線５、および
適宜視角にわたって直線が連続配置されていることが必
要である。
【００１５】また、医療機関等によって使用されるパネ
ル状の検査用チャート以外に、患者が自分でいつでも検
査できるように、例えばクレジットカード等の大きさの
カードに検査用チャート１を縮小したものを印刷して携
帯できるようにして利用してもよい。
【００１６】更に、検査用チャート１をコンピュータ等
の表示画面に表示させて用いてもよい。
【００１７】
【発明の効果】本発明によると、検査用チャートの縦線
がそれぞれ異なった角度を有しているので、従来では検
出されにくかった変視症の症状も検出されやすくなる。Description: BACKGROUND OF THE INVENTION [0001] 1. Field of the Invention [0002] The present invention relates to an inspection chart used when performing an ophthalmologic examination in an ophthalmic medical institution or the like. 2. Description of the Related Art Conventionally, as a test table for diagnosing a myopia caused by a disease such as a macula, a check grid chart-like test chart 51 called an Amsler chart as shown in FIG. 3 has been used. Have been. [0003] The inspection chart 51 has a visual angle 20 from the center fixation target 52 in the vertical and horizontal directions.
In the range of degrees, a vertical grid and a horizontal line are displayed for each viewing angle of 1 degree, so that a square grid is formed in a grid pattern. When the retina is deformed due to edema or the like, the image reflected on the retina is distorted, and the straight line looks distorted. By looking at the chart 51, it is diagnosed whether the straight line looks distorted or not, and the degree of the distortion is determined. [0004] However, patients with dystropia are often
Since the degree of the disparity varies depending on the direction, it may be difficult to detect only a straight line forming a square grid like the inspection chart 51 in FIG. 3 depending on the symptom of the patient. SUMMARY OF THE INVENTION [0005] The present invention has been made to solve the above-mentioned problems, and is an inspection chart capable of detecting ophthalmopathy without omission by a simple inspection method. The purpose is to provide. [0006] Therefore, an inspection chart of the present invention is a chart for inspection of an ophthalmopathy in which a plurality of straight lines are arranged so as to form a checkerboard pattern, as viewed from the position of the eye. The lattice fringes were displayed by the perspective method so that the area of the lattice gradually decreased from the side toward the front. [0007] Since the vertical straight lines have different angles from the viewpoint, they are easily detected regardless of the degree or symptom of the dysplasia. An embodiment of the present invention will be described with reference to the drawings. FIG. 1 is an inspection chart 1 showing an embodiment of the present invention. For example, a grid pattern displayed by a perspective method on a printing plate 10 made of a sheet of cardboard or a synthetic resin sheet having a size of about A3 size is used. 3 is printed. The lattice stripes 3 are formed by a plurality of horizontal lines 4 displayed in the short side direction of the printing plate 10 and vertical lines 5 displayed in the long side direction and having different angles. Horizontal line 4
Is displayed such that the end on the near side 11 with respect to the position of the eye at the time of examination is longest, gradually decreases toward the front side 12, and the interval between the horizontal lines 4 gradually decreases. Further, the vertical lines 5 are provided with an angle inward in accordance with the ratio of the horizontal lines 4 becoming shorter, and the lattice stripes 3 formed by the vertical lines 5 and the horizontal lines 4 gradually become smaller toward the front by perspective. It is displayed as follows. At the center of the inspection chart 1, a fixation target 2 is displayed. At the time of inspection, as shown in FIG. 2, the front side 11 of the inspection chart 1 is directed toward the eye 9 of the subject, and the plate 10 is held in a horizontal direction. The entire inspection chart 1 is viewed while gazing at 2. When the subject's retina is deformed due to edema or the like, the straight line looks distorted, so the examiner asks the subject about which straight line appears to be distorted and how distorted it is. Diagnose the presence and degree of the disease. In such an inspection chart 1, a vertical line 5
Have different angles, which makes it easy to detect dysplasia irrespective of the retina deformation position. The length and the number of the horizontal lines 4 and the vertical lines 5 of the inspection chart 1 are not limited to the example shown in FIG. Stimulus to the retina, vertical lines 5 having a plurality of angles, and straight lines are appropriately arranged continuously over the viewing angle. In addition to the panel-shaped inspection chart used by medical institutions, the inspection chart 1 is reduced to a card such as a credit card so that the patient can inspect at any time. You may print and make it portable. Further, the inspection chart 1 may be used by displaying it on a display screen of a computer or the like. According to the present invention, since the vertical lines of the inspection chart have different angles, the symptoms of the myopia, which were difficult to detect conventionally, can be easily detected.
【図面の簡単な説明】
【図１】本発明の実施の形態を示す平面図である。
【図２】図１の検査用チャートの使用方法を示す概略説
明図である。
【図３】従来例を示す平面図である。
【符号の説明】
１ 検査用チャート、２ 固視標、３ 格子縞、４ 横
線、５ 縦線、１０版面、１１ 手前側、１２ 前方側BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a plan view showing an embodiment of the present invention. FIG. 2 is a schematic explanatory view showing how to use the inspection chart of FIG. 1; FIG. 3 is a plan view showing a conventional example. [Description of Signs] 1 inspection chart, 2 fixation target, 3 grid pattern, 4 horizontal line, 5 vertical line, 10 printing plate, 11 front side, 12 front side
Claims (1)
置された変視症検査用チャートにおいて、眼の位置から
見て手前側から前方に向かって徐々に格子の面積が小さ
くなるように遠近法によって前記格子縞が表示されるこ
とを特徴とする変視症検査用チャート。Claims: 1. In a malformation inspection chart in which a plurality of straight lines are arranged so as to form a grid pattern, the area of the grid gradually increases from the near side to the front as viewed from the position of the eye. A chart for examining a malformation, wherein the checkerboard is displayed by a perspective method so that is smaller.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2002074168A JP2003265412A (en) | 2002-03-18 | 2002-03-18 | Metamorphopsia testing chart |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2002074168A JP2003265412A (en) | 2002-03-18 | 2002-03-18 | Metamorphopsia testing chart |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JP2003265412A true JP2003265412A (en) | 2003-09-24 |
Family
ID=29203632
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2002074168A Pending JP2003265412A (en) | 2002-03-18 | 2002-03-18 | Metamorphopsia testing chart |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2003265412A (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2015040885A1 (en) * | 2013-09-18 | 2015-03-26 | 株式会社トプコン | Eye examination device |
| EP2949265A1 (en) | 2014-05-28 | 2015-12-02 | Kabushiki Kaisha Topcon | Optometry apparatus and method for subjective measurement using optometric chart |
| JP2017127648A (en) * | 2013-09-18 | 2017-07-27 | 株式会社トプコン | Optometer |
| KR20180040090A (en) * | 2016-10-11 | 2018-04-19 | 사회복지법인 삼성생명공익재단 | The method and apparatus for determining metamorphopsia based on user interaction |
| WO2018070736A3 (en) * | 2016-10-11 | 2018-06-14 | 사회복지법인 삼성생명공익재단 | Method and apparatus for determining metamorphopsia on basis of user interaction |
-
2002
- 2002-03-18 JP JP2002074168A patent/JP2003265412A/en active Pending
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2015040885A1 (en) * | 2013-09-18 | 2015-03-26 | 株式会社トプコン | Eye examination device |
| JP2015058107A (en) * | 2013-09-18 | 2015-03-30 | 株式会社トプコン | Optometer |
| JP2017127648A (en) * | 2013-09-18 | 2017-07-27 | 株式会社トプコン | Optometer |
| EP2949265A1 (en) | 2014-05-28 | 2015-12-02 | Kabushiki Kaisha Topcon | Optometry apparatus and method for subjective measurement using optometric chart |
| JP2015223509A (en) * | 2014-05-28 | 2015-12-14 | 株式会社トプコン | Optometry apparatus and method for subjective measurement using optometric chart |
| US10251543B2 (en) | 2014-05-28 | 2019-04-09 | Kabushiki Kaisha Topcon | Optometry apparatus and method for subjective measurement using optometric chart |
| KR20180040090A (en) * | 2016-10-11 | 2018-04-19 | 사회복지법인 삼성생명공익재단 | The method and apparatus for determining metamorphopsia based on user interaction |
| WO2018070736A3 (en) * | 2016-10-11 | 2018-06-14 | 사회복지법인 삼성생명공익재단 | Method and apparatus for determining metamorphopsia on basis of user interaction |
| KR102043092B1 (en) | 2016-10-11 | 2019-11-11 | 사회복지법인 삼성생명공익재단 | The method and apparatus for determining metamorphopsia based on user interaction |
| US11141057B2 (en) | 2016-10-11 | 2021-10-12 | Samsung Life Public Welfare Foundation | Method and apparatus for determining metamorphopsia based on user interaction |
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