an uncorrected visual acuity of at least 20/40 (6/12) with both eyes open. 5 f* k$ J& c. C' c' [ y; ~3 P: K . B Y" ?& C+ Avisual aids (glasses or contact lenses) must have vision of 20:20 (6:6) with both eyes open. 7 L/ H: D7 `8 C5 r" Q H
我试试啊,不好或不对请谅解,因为我不是近视,没有看过眼医。 0 s* V* o0 y5 s4 P" ?- T9 W! Kan uncorrected visual acuity of at least 20/40 (6/12) with both eyes open. 两眼睁开时,未矫正的双眼视敏度至少是20/40(6/12)。 x( @* M# S1 B Y, c
visual aids (glasses or contact lenses) must have vision of 20:20 (6:6) with both eyes open.在有视力辅助(如眼镜或隐形眼镜)的情况下,双眼睁开时,视敏度可为20:20(6:6),相应增强。
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我过去常检查眼睛。从20 ft (6 米) 远,如果只能看清top最大的 , A% I+ C2 ^8 }7 E E 7 v- g6 k4 J: i+ j" u6 G# I 你的视力is 20/200 (20 means from 20 ft.) 如果能看清最下行最小的 B& t. J! C- _( E' d$ u/ g3 I - d5 ^ T2 I( {& |/ E0 U" | E V O T Z - c. J) e. E- ]$ d# u- K * V! p( d+ ?) S5 y你的视力is 20/20. 也就是1.5。拿到 Diver’s license 的视力要求是 20/40, 也就是校正后的视力能看清from bottom up 第3行,也就是校正视力1.0.