摘要
目的探讨倾斜对不同屈光度景深延长型人工晶状体(EDOF IOL)光学质量的影响。设计实验研究。研究对象不同屈光度TECNIS Symfony ZXR00 EDOF IOL。方法采用体外光学质量测试系统OptiSpheric IOL R&D评价+10 D、+20 D、+30 D的ZXR00,在ISO-2模型角膜下测定IOL处于居中位置及倾斜3°、5°、7°、9°、11°时焦点处50 lp/mm的调制传递函数(MTF)值、MTF曲线和USAF分辨率测试图。主要指标MTF值、MTF曲线和USAF分辨率测试图。结果倾斜3°时3种屈光度IOL的MTF值开始下降,倾斜5°、7°时MTF值继续下降,USAF图像显示倾斜7°内3种屈光度IOL保持相对较好的图像质量。倾斜9°时MTF值继续下降,+30 D屈光度IOL中焦点的USAF图像质量下降显著。倾斜至11°时,远焦点处+10 D、+20 D、+30 D ZXR00的50lp/mm MTF值分别为0.336、0.293、0.287,中焦点处的MTF值分别为0.286、0.271、0.210,远、中焦点均表现为+10 D屈光度IOL光学质量最好,+30 D光学质量最差。MTF曲线显示远、中焦点均表现为IOL屈光度越低,光学质量下降幅度越小。发生倾斜后MTF曲线在高频区降幅更大,低频区降幅较小。结论倾斜对IOL的光学质量产生负面影响,倾斜7°内,3种屈光度IOL均有较好的抗倾斜能力。整体表现为IOL屈光度越低,抗倾斜能力越好。
Objective To evaluate the impact of tilt on the optical quality of EDOF IOL with different diopters.Design Experimental study.Participants TECNIS Symfony ZXR00 EDOF IOL with different diopters.Methods OptiSpheric IOL R&D was used to evaluate the optical quality of the+10 D,+20 D,and+30 D ZXR00.Under the ISO-2 model cornea conditions,the modulation transfer function(MTF)values at spatial frequencies of 50 lp/mm,MTF curves,and USAF resolution test charts were measured at each focal point of the IOL when the IOL was in the centered position and at tilt of 3°,5°,7°,9°,and 11°.Main Outcome Measures MTF values,MTF curves,and USAF resolution test charts.Results With a tilt of 3°,the MTF values of all threeIOLs began to decline.And this decline continued at 5°and 7°tilt.The USAF images showed that all three IOLs maintained relatively good image quality within a tilt of 7°.With a tilt of 9°,the MTF values continued to decline,and the USAF image quality at intermediate focus of+30 D ZXR00 showed a significant decline.With a tilt of 11°,the 50 lp/mm MTF values for the+10 D,+20 D,and+30 D IOLs at the far focus were 0.336,0.293,and 0.287,respectively,while at the intermediate focus,the values were 0.286,0.271,and 0.210,respectively.Both the far and intermediate focus showed that the optical quality of the+10 D IOL was the best,while the+30 D IOL was the worst.At both far and intermediate focus,the MTF curves revealed that the lower the IOL diopter,the smaller decline in optical quality.After tilt,the MTF curves exhibited a greater decline in the high-frequency range and a smaller decline in the low-frequency range.Conclusion Tilt had a negative impact on the optical quality of the IOL.Within a tilt of 7°,the three diopter IOLs showed good resistance to tilt.Overall,the lower the IOL diopter,the better the tilt resistance.
作者
秦苏云
廖萱
兰长骏
谢丽暄
潘若琳
谭青青
黄欢
王艳
Qin Suyun;Liao Xuan;Lan Changjun;Xie Lixuan;Pan Ruolin;Tan Qingqing;Huang Huan;Wang Yan(Department of Ophthalmology,Affiliated Hospital of North Sichuan Medical,College Medical School of Ophthalmology&Optometry,North Sichuan Medical College,Nanchong Sichuan 637000,China;Chengdu Eastern Aier Eye Hospital,AIER Eye Institute in Chengdu High-tech Zone,Chengdu 610056,China)
出处
《眼科》
2025年第3期212-216,共5页
Ophthalmology in China
基金
四川省医学科研课题(S21011)
成都市医学科研课题(2024268)
爱尔眼科医院集团临床研究所科研基金项目(AIG2306D01)。
关键词
人工晶状体
景深延长
体外测试
倾斜
intraocular lens
extended depth-of-focus
in vitro test
tilt
