Department of Ophthalmology, Academic Medical Center, Amsterdam, The Netherlands.
Cornea. 2010 May;29(5):516-22. doi: 10.1097/ICO.0b013e3181c11e29.
(1) To quantify the effect of contact lens wear on straylight in rigid and soft contact lens wearers and (2) to relate findings to morphological changes and subjective complaints.
Straylight was measured using the Oculus C-Quant during contact lens wear and after contact lens removal in 30 rigid contact lens wearers and 30 soft contact lens wearers. Semi-quantitative (0-4) slit-lamp grading of anterior segment changes using Efron grading scales and contact lens characteristics were performed. Subjects answered a straylight questionnaire.
Soft contact lens wearers had a mean straylight of logarithmic value of the straylight parameter [log(s)] = 0.934 during contact lens wear and after contact lens removal [comparable to log(s) = 0.938 of age-matched normal eyes]. Rigid contact lens wearers had a mean straylight during contact lens wear of log(s) = 1.167. After contact lens removal, log(s) significantly decreased to 0.997 (P < 0.01). Straylight values with rigid contact lenses were strongly increased (P < 0.001) compared with age-matched normal eyes; after contact lens removal, these values decreased but remained elevated. Straylight in rigid contact lens wearers correlated with the amount of deposits on the contact lens (P < 0.01) but not with other variables of the contact lens score. The questionnaire showed more straylight complaints in rigid contact lens wearers than in soft contact lens wearers (P < 0.01).
Rigid contact lens wear leads to increased straylight during contact lens wear and after contact lens removal. This may be because of subclinical effects of contact lens wear on the cornea and is not seen in soft contact lens wearers.
(1) 量化隐形眼镜佩戴对硬性和软性隐形眼镜佩戴者杂散光的影响，(2) 将发现结果与形态变化和主观抱怨联系起来。
在 30 名硬性隐形眼镜佩戴者和 30 名软性隐形眼镜佩戴者佩戴隐形眼镜和摘下隐形眼镜后，使用 Oculus C-Quant 测量杂散光。使用 Efron 分级量表对半定量（0-4）裂隙灯对眼前节变化进行分级，并记录隐形眼镜特征。受检者回答杂散光问卷。
软性隐形眼镜佩戴者在佩戴隐形眼镜和摘下隐形眼镜后，杂散光参数的对数 [log(s)] 的平均杂光值分别为 0.934[可与年龄匹配的正常眼的 log(s) = 0.938 相媲美]。硬性隐形眼镜佩戴者在佩戴隐形眼镜时的平均杂光值为 log(s) = 1.167。摘下隐形眼镜后，log(s) 显著下降至 0.997（P < 0.01）。与年龄匹配的正常眼相比，硬性隐形眼镜的杂光值显著增加（P < 0.001）；摘下隐形眼镜后，这些值虽然降低但仍处于较高水平。硬性隐形眼镜佩戴者的杂光值与隐形眼镜上的沉积物量（P < 0.01）相关，但与隐形眼镜评分的其他变量无关。问卷显示，硬性隐形眼镜佩戴者的杂光抱怨比软性隐形眼镜佩戴者多（P < 0.01）。
硬性隐形眼镜佩戴会导致佩戴隐形眼镜期间和摘下隐形眼镜后杂光增加。这可能是因为隐形眼镜佩戴对角膜的亚临床影响，而软性隐形眼镜佩戴者则没有这种情况。
