PROBLEM TO BE SOLVED: To solve such problems that measurement using a conventional near-point optometer requires time and effort, the check of a blur occurrence point at which a target becomes indistinct to the eye is influenced by the subjectivity of a person being tested, which is because there is no reference for comparison of a target difficult to determine or the degree of blur and, moreover, the display of a measurement result is too technical and difficult to understand.SOLUTION: Using a near-point optometer in which a 1/2 of measurement distance has been set with a mirror, two identical targets, which make it easy to determine blur, are superposed one on the other in a straight line with a 3-centimeter distance between them. This enables the point at which blur of a measurement target near an eye being tested occurs to be checked by comparing this point with a target farther than the eye being tested. Displaying the measurement result in age makes it possible not only to check the development of presbyopia but also to use for health care by recognizing a change such as eyestrain.COPYRIGHT: (C)2013,JPO&INPIT【課題】 従来の近点計による測定は手間がかかり、また、視標が不鮮明になるボケの発生点の確認は被験者の主観に左右される問題があった。これは、判別し難い視標やボケの程度を比較できる基準がないためである。さらに、測定結果の表示が専門的で分かり難い。【解決手段】 鏡を用いて測定距離を二分の一にした近点計を使用して、ボケの判別が容易な同じ二つの視標を3センチの間隔をあけて直線上に重ねて設置し、披検眼に近い測定視標のボケの発生時点を披検眼に遠い比較視標と比較して確認することができる。また、測定結果を年齢で表示することで老眼の進行の確認だけでなく、目の疲れなどの変化を知ることで健康管理用としても使用することができる。【選択図】図1
