双元件可调节人工晶状体设计  

Design of Dual Element Accommodative Intraocular Lens

作　　者：周晓红 王良玉 杨朋千[2] Xiaohong Zhou;Liangyu Wang;Pengqian Yang(Department of Ophthalmology,Children's Hospital of Fudan University,National Children’s Medical Center,Shanghai 201102,China;High Power Laser Physics Joint Laboratory of Shanghai Institute of Optics and Fine Mechanics,Chinese Academy of Sciences,Shanghai 201800,China)

机构地区：[1]复旦大学附属儿科医院眼科,国家儿童医学中心,上海201102 [2]中国科学院上海光学精密机械研究所,高功率激光物理联合实验室,上海201800

出　　处：《中华眼视光学与视觉科学杂志》2022年第6期464-471,共8页Chinese Journal Of Optometry Ophthalmology And Visual Science

摘　　要：目的:设计一种新的双元件可调节人工晶状体,并对其成像质量进行评估。方法:通过光学设计软件Zemax,建立新设计的双元件可调节人工晶状体和人眼模型,模拟仿真其在不同视距下(L=6 m、L=70 cm、L=40 cm以及L=25 cm)的成像结果,得到空间频率为100 cycles/mm时的调制传递函数(MTF)值。与Simonov等研究结果进行对比分析,同时分析仿真结果是否满足人工晶状体植入光学特性和测试标准。结果:通过光学设计软件模拟仿真新设计的双元件可调节人工晶状体眼模型,其结果显示无论α=0°还是α=5°,瞳孔大小为3 mm时,单色光(λ=0.546μm)空间频率100 cycles/mm对应的MTF值均大于0.43,满足人工晶状体植入光学特性和测试标准。在α=0°时,仿真结果相较于Simonov等研究结果有较大提升;在α=5°时,无明显提升。结论:本研究设计的双元件可调节人工晶状体仿真结果满足人工晶状体植入光学特性和测试标准要求,相较于Simonov的研究结果,其整体性能有所提升。Objective:To evaluate the imaging quality of the dual-element accommodative intraocular lens proposed by the author.Methods:Getting the results by modelling and simulating the eye with IOL,and comparing with the existing research results.The dual-element accommodative intraocular lens proposed by the author were simulated with the optical design software Zemax,and the imaging results at different viewing distances(L=6 m,L=70 cm,L=40 cm and L=25 cm)were simulated,obtaining the MTF value when the spatial frequency is 100 cycles/mm.Comparing with the results of Simonov's research and analyzing,checking whether the simulation results meet standard of the optical properties and testing methods of intraocular lens implantation.Results:The dual-element accommodative intraocular lens proposed by the author was simulated with the optical design software.The results showed that no matterα=0°orα=5°when the pupil size is 3 mm and the wavelengthλ=0.546μm,the modulation transfer function(MTF)values​​corresponding to the frequency of 100 cycles/mm are all greater than 0.43,which meets standard of the optical properties and testing methods of intraocular lens implantation.Whenα=0°,the simulation results are greatly improved compared with Simonov's research results;whenα=5°,there is no significant improvement.Conclusion:The simulation results of the dual-element accommodative intraocular lens proposed by the author meet the requirements of the optical properties and testing methods of intraocular lens implantation;compared with Simonov's research results,the results are generally improved.

关 键 词：人工晶状体 可调节 焦距 光学系统 

分 类 号：R318.18[医药卫生—生物医学工程]