an uncorrected visual acuity of at least 20/40 (6/12) with both eyes open. ! o o+ ~8 F0 x0 F! M 5 j0 C; h7 C9 y" d% P" n( T4 Nvisual aids (glasses or contact lenses) must have vision of 20:20 (6:6) with both eyes open. . k. B F- H; f3 |) F- C0 m+ D4 B# P
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。 : I9 n; o- M6 D; t% h3 B6 {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)。 6 C6 [$ X! v+ N8 a1 X% m0 Y8 |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。
* S4 B* O& ~7 B0 I ! w0 {% h( M% \4 i- W' F我过去常检查眼睛。从20 ft (6 米) 远,如果只能看清top最大的 - S3 T" Q" t* d# G3 K E $ |' B- z8 M6 F( b 你的视力is 20/200 (20 means from 20 ft.) 如果能看清最下行最小的 x& q. e" e$ ~ 2 }7 T5 ~9 k6 a" p5 q) t2 }8 G E V O T Z' U. M ?1 O' ]5 t; Z) W" D. |