an uncorrected visual acuity of at least 20/40 (6/12) with both eyes open. ; \6 \% R" Y7 J3 q2 h( x: Z1 ]
% p# G( k9 ^& U- W: _visual aids (glasses or contact lenses) must have vision of 20:20 (6:6) with both eyes open. ( o1 [/ x) @& j( t5 p8 g. {; U
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。7 n( `9 e% L8 H% ~ m6 r4 m
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)。; |: l2 u$ {& s- z1 b# 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。
' g8 g0 n2 U0 o# S( ?9 l: N: g我过去常检查眼睛。从20 ft (6 米) 远,如果只能看清top最大的 + I2 P: }3 Q8 S. z( A8 E E( g9 `0 P) a3 J c( Y
你的视力is 20/200 (20 means from 20 ft.) 如果能看清最下行最小的* }7 p' c8 g; j+ E: g8 f
& E S# h- o, T% B/ O6 C
E V O T Z) Q, m, n% k* Q& i8 b
" j/ i3 f. {: n1 S2 o& b, V6 [7 K
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.