an uncorrected visual acuity of at least 20/40 (6/12) with both eyes open. 7 G. G3 Q7 a1 e5 O! P4 z+ R4 @3 m; r( [
visual aids (glasses or contact lenses) must have vision of 20:20 (6:6) with both eyes open. 5 Z' S7 h! X1 p0 v! \7 _ 4 V+ e+ X3 O0 S7 X重要的是专业问题:20/40是什么意思?校正后双眼视力20/20(6:6)是什么意思?
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。) d" J6 C" r6 X# e N N& U
an 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)。+ U/ _2 Y6 T* j% ^) d. {, K
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 1 D# n. c+ S3 |1 G# a1 E7 m4 W E - ?$ Y% ^+ Y3 }% e 你的视力is 20/200 (20 means from 20 ft.) 如果能看清最下行最小的 4 p" t; {4 v+ u \& \* e( N$ Q ; z2 ?$ q$ Z) R E V O T Z" n2 ?6 D2 t/ T
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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.