双元件可调节人工晶状体设计

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=0.546 μm）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。

Design of Dual Element Accommodative Intraocular Lens

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 matter α=0°or α=5° when the pupil size is 3 mm and the wavelength λ = 0.546 μm, 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. When α=0°, the simulation results are greatly improved compared with Simonov's research results; when α=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.