Effect of Intraocular Lens Decentration and Tilt on Vision Performance of Human Eye
人工晶体倾斜与偏心对人眼视功能的影响

Based on the eye model proposed by Hwey-Lan Liou,the impact of intraocular lens with different spherical aberration over same optical zone decentration and tilt on performance of human eye was analysised with ray-tracing method using ZEMAX software.When the IOL was perfectly centered,the vision performance of eye with negative spherical aberration IOL was better than that with no inherent spherical aberration IOL or positive spherical aberration IOL,the vision performance of eye decreased with the increasing of IOL spherical aberration at same amount of IOL decentration and tilt and the impact of aberration-free IOL decentration and tilt on vision performance of eye was not obvious,when the IOL decentered 1.0mm and tilted 10°which could make people have apparently discomfort vision feeling,the optical performance of aberration-free IOL was better than the positive spherical aberration IOL and negative spherical aberration IOL.