an uncorrected visual acuity of at least 20/40 (6/12) with both eyes open. " O: g8 ~& D: r' E, j) r1 v( ` s
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visual aids (glasses or contact lenses) must have vision of 20:20 (6:6) with both eyes open. + @6 @9 _8 w' k4 _; G Z % c6 D/ p j0 ~3 f! }) z3 ?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。3 T- F) r% Y# k' R: f$ D
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)。 $ w9 o E2 c/ P8 {' qvisual 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。