an uncorrected visual acuity of at least 20/40 (6/12) with both eyes open. & }' ]' i" r& w% c% Wvisual aids (glasses or contact lenses) must have vision of 20:20 (6:6) with both eyes open. ' q% k6 T) h( }! Y' q/ ]
8 O5 V+ k9 f+ [8 H. D/ ?# d. R
请问上面的意思是什么?相当于国内什么等级的视力?谢谢!