Sorry, didn't see your reply, Prescription degree is an old system, I use it because my parents use it. Though I understand there is a Points system that has a large following, for example, 2.0 vision is un-aided
-slimpiggy(瘦猪犹如插翅虎);
2001-8-24{9}(#177963@0)
eyesight,
I need a pair of glasses. Right?
-birdswimming(feifei);
2001-7-29(#149662@0)
这样的吗？有你在，那上次那篇“when a bird fells in love with a fish"不就有答案了？嘿嘿
-guest:guest;
2001-7-29(#149665@0)