關於鏡片厚度的疑問 - 眼鏡
By Ophelia
at 2008-01-10T04:05
at 2008-01-10T04:05
Table of Contents
一般來說,近視度數越深的鏡片,厚度都是越大的,
因為近視鏡片是凹透鏡,度數越深曲度越大邊緣就愈厚。
但長期以來我一直有個疑問,就是散光度數影響鏡片厚度的問題,
一般會配高折射率鏡片的使用者都是高度近視患者,
比方400以下可能就配1.5,400~700配1.6,700+就配1.67、1.7等等。
那散光呢? 散光的成因是角膜或水晶體呈橢圓形有兩個焦點所以會造成兩個成像,
導致視力模糊看東西時物體的邊緣會有殘影的感覺,
那反應在在鏡片的厚度上的結果是如何呢?
比方說同樣是1.5單非鏡片,
近視300度散光0度和近視300度散光200度這兩個鏡片,厚度會有差別嗎? 會差距很大嗎?
請板上的高手解答我的疑惑吧!!!
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因為近視鏡片是凹透鏡,度數越深曲度越大邊緣就愈厚。
但長期以來我一直有個疑問,就是散光度數影響鏡片厚度的問題,
一般會配高折射率鏡片的使用者都是高度近視患者,
比方400以下可能就配1.5,400~700配1.6,700+就配1.67、1.7等等。
那散光呢? 散光的成因是角膜或水晶體呈橢圓形有兩個焦點所以會造成兩個成像,
導致視力模糊看東西時物體的邊緣會有殘影的感覺,
那反應在在鏡片的厚度上的結果是如何呢?
比方說同樣是1.5單非鏡片,
近視300度散光0度和近視300度散光200度這兩個鏡片,厚度會有差別嗎? 會差距很大嗎?
請板上的高手解答我的疑惑吧!!!
--
▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄▄
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