Vreugdenhil W, Eggink F A, Beekhuis W H, Theeuwes A
Cornea and Contact Lens Service, Eye Hospital, Rotterdam, The Netherlands.
Optom Vis Sci. 1990 Sep;67(9):670-2. doi: 10.1097/00006324-199009000-00002.
The relation between corneal thickness changes and the Dk value of rigid contact lenses was investigated in 42 patients who were fitted with contact lenses for the first time. These 42 patients were divided into 4 groups that were fitted with contact lenses of different Dk values. Corneal thickness in the open-eye state was measured (mid-afternoon) before contact lens fitting and after 6 weeks of daily contact lens wear. The changes in corneal thickness were not significantly different among the 4 contact lens materials (Dk values 8, 26, 54, and 92). We conclude that for daily wear use the lower Dk materials meet corneal requirements. However, there is a significant trend; the higher Dk values result in a thinner cornea. Causes for this phenomenon are discussed.
对42例首次佩戴隐形眼镜的患者，研究了角膜厚度变化与硬性隐形眼镜Dk值之间的关系。这42例患者被分为4组，分别佩戴不同Dk值的隐形眼镜。在佩戴隐形眼镜前（午后）和每日佩戴6周后，测量睁眼状态下的角膜厚度。4种隐形眼镜材料（Dk值分别为8、26、54和92）之间的角膜厚度变化无显著差异。我们得出结论，对于日戴型隐形眼镜，较低Dk值的材料符合角膜需求。然而，存在一个显著趋势；Dk值越高，角膜越薄。本文讨论了该现象的成因。
