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标准近视力表已沿用30多年。今博采众家之长修正如下: 1.用缪天荣教授的10~(1/10) 视标增率为行间增率,故增加0.12、0.15和0.25三行视标。2.用包廷钊提出的三划等长的“E”(<1′)为视标。
Standard near vision chart has been used for more than 30 years. This Bocaizhongchangzhangchang amended as follows: 1. With Professor Miu Tian Rong 10 ~ (1/10) as standard rate increase rate between rows, it increased 0.12,0.15 and 0.25 three rows of visual target. 2. With Bao Tingzhao proposed three equal length “E” (<1 ’) as the visual target.