不同因素对可调节人工晶体屈光调节力的影响

首先以Hwey-Lan Liou眼模型为基础，根据等效性原则，保持该眼模型中自然晶状体屈光度不变，对无穷远点成像。然后利用ZEMAX实现光线追迹的方法，将自然晶状体替换为可调节人工晶状体（accommodative intraocular lens，AIOL），结合对人眼成像质量影响的分析，研究了AIOL在眼内的移动度、材料、中心厚度、结构、光学面非球面性等因素对其屈光调节力的影响。结果表明:AIOL移动度对其调节力贡献最大,材料、中心厚度、结构对调节力基本无影响；具有非球面光学面的AIOL调节力相对较大。

Influence of different factors on diopter accommodation of accommodative intraocular lens

Based on the Hwey-Lan Liou eye model and the equivalent rule,crystal lens is replaced with accommodative intraocular lens(AIOL) for imaging at infinite distance.Based on the analysis of imaging quality of human eye,the displacement,medium refractive index,central thickness,structure,aspheric refractive surface of the AIOL are studied with ZEMAX to implement light ray tracing method.Simulation results indicate that the displacement of AIOL has the greatest impact on its tunability;while it is hardly affected by the medium refractive index,central thickness,and structure.The AIOL with aspheric surface has better tunability.