optotype

optotype

1. Abstract The character recognition threshold or acuity of Chinese characters was measured and compared with English letters and optotype E, by the method of constant stimuli.

摘要 本研究采用恒定刺激法测量汉字的大小辨认阈限(视锐)，并与英文字母和视标E 进行比较。

2. The character recognition threshold or acuity of Chinese characters was measured and compared with English letters and optotype E,by the method of constant stimuli.

本研究采用恒定刺激法测量汉字的大小辨认阈限(视锐),并与英文字母和视标E进行比较。

3. This new visual picture chart is used for the measurement of visual acuity of 2-3 years old children. Bird, fish, house, scissors, cup, apple, umbrella, flower and duck serve as the test optotype.

本视力表所用视标为:鸟、鱼、房子、剪子、茶杯、苹果、雨伞、花和鸭子。

4. The results show that (1)the acuity increases as stroke frequency increases, and the acuity of Chinese characters is significantly greater than that of English letters and optotype E;

结果表明：(1) 字符的视锐随笔划频率增加而增大，汉字的视锐显著大于英文字母和视标E；

5. optotype slide

视力测试幻灯片

6. Findings for this experiment showed that the optotype acuity for subjects improved from 20/600 and 20/63 in the amblyopic eyes to 20/125 and 20/40, respectively.Binocular vision was also improved.

这个实验的发现显示，研究对象的视力表敏锐度，两人的弱视眼分别从 20/600 和 20/63 改善到 20/125 和 20/40，双眼视力也获得改善。

7. The E optotype on the chart had 3 limbs of equal length.A regular geometric progression of optotype sizes and distribution was employed to arrange 14 lines with 4 optotypes on each line.

采用三划等长的E形视标，视标大小及排列采用均匀的几何增率，每行视标数为4个，共14行，每两行视标变化进率为拶而。