【摘要】 本文介绍一种选用阿拉伯数字作视标的视力表。该视力表以E形视标为标准,采用（10）^1/100的距离增率及五分视力记录法,根据不同屈光状态眼睛的检查结果,对数字视标的大小进行了调整。该视力表与缪氏对数视力表所测视力值呈高度相关（r=0.98;P<0.01）。测试结果初步表明,该视力表与缪氏视力表具有较好的等价效应。更多还原

【Abstract】 A new visual acuity chart, with Arabic numerals as optotypcs is described. The size of the optotypcs was adjusted to be equivalent to E letter by testing eyes with normal and subnormal visual acuity in a geometric progression of distance for 100 and a 5-mark visual notation.The visual acuity values measured by this chart correlated closely with these by Miao’s logarithmic chart (r=0.98, ,P<0.01). The results suggest that this chart be fairly equivalent to Miao’s chart.更多还原