球面隱形眼鏡.淚鏡矯正散光的真實性與否 - 隱形眼鏡

※ [本文轉錄自 optical 看板]

作者: kramnik (progressive) 看板: optical
標題: [心得] 球面隱形眼鏡.淚鏡矯正散光的真實性與否
時間: Fri Nov 27 17:17:41 2009


根據Aspheric Contact Lenses: Fact and Fiction

An examination of whether soft aspheric contact lenses can correct
astigmatism and spherical aberration. 　　

By Pete Kollbaum, OD, FAAO and Arthur Bradley, PhD
http://www.clspectrum.com/article.aspx?article=12770




實驗對象：
14 eyes with low amounts of astigmatism
(-0.75 ±0.87D, five eyes with against-the-rule [ATR]


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下圖為wavefront分析(排除2階球差項)
http://www.clspectrum.com/archive/2005/March/Picture2.jpg

可以看出僅有散光隱形眼鏡能夠近乎完全弭除散光


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下為各隱形眼鏡弭除散光實驗結果

TABLE Residual Astigmatism with CLs

LENS ASTIGMATISM (DIOPTERS)

Acuvue 2 sphere -0.63
Choice AB asphere -0.74
Definitions AC asphere -0.60
Frequency 55 asphere -0.64
GP sphere -0.67
Biomedics Toric -0.02


可以看出球面隱形眼鏡幾乎對散光的弭除沒有效果



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