買放大片近視補散光的問題(拜託幫忙解答) - 眼鏡
By Andy
at 2009-03-22T22:41
at 2009-03-22T22:41
Table of Contents
推 r147500:那您有扣除 原本給您的數據是我戴眼鏡的度數 有換算成隱03/22 22:25
→ r147500:型眼鏡的度數後 才去換算嗎> <03/22 22:25
我假定您原眼鏡是100%準確(所謂準確是指最為理想)..
然後將眼鏡兩屈光主徑拆開換算成隱形眼鏡兩屈光主徑度數..
#我們可以發現眼鏡的各角度向心屈光度換算成隱形眼鏡向心屈光度..
換來的隱形眼鏡形式並非標準的圓柱鏡..
不滿足 和散光軸夾θ角向心屈光度 = 球面度數 + 散光度數*(sinθ)^2
→ r147500:另外想知道的是把散光降至在275度 近視不加深03/22 22:25
→ r147500:跟用近視補散光 哪個比較傷?03/22 22:26
視光理論是假定我們調節會定在最小模糊圓上..
照這說法..球面度數在近視322度以內睫狀肌都不會介入調節..
所以額外球面度數壓散光度數並不會傷眼睛..
#當然調節的定位比單純的視光理論要複雜..
不然就不會有剝奪形體性近視的出現..
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at 2009-03-24T01:56
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