an uncorrected visual acuity of at least 20/40 (6/12) with both eyes open. ; c" B2 k( |! n1 ~5 l) k/ u: ~ z; ]
" Z( z+ {, V0 C2 y1 \4 k! ^visual aids (glasses or contact lenses) must have vision of 20:20 (6:6) with both eyes open. 3 U! |5 g; \2 s$ c2 }0 p/ _; r
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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。" p E6 s1 V6 Q. q
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)。5 n2 c7 F2 S2 p& Y+ X) K! N
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。
5 n7 b f* R! I' J& F* V0 m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: l- }4 A# b" I+ h+ b0 | E. {$ v3 S L6 r2 b: \' v
你的视力is 20/200 (20 means from 20 ft.) 如果能看清最下行最小的; a4 r/ G% T1 v4 d3 Z+ P
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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.