摘要
目的探讨居中时不同屈光度的非球面单焦点人工晶状体(intraocular len,IOL)的光学特性及不同程度偏心和倾斜对不同屈光度的IOL光学质量的影响。方法采用体外光学质量测试系统OptiSpheric IOL R&D评价+10 m^(-1)、+20 m^(-1)和+30 m^(-1)3种屈光度的非球面单焦点IOL AcrySof IQ SN60WF的光学质量。测量并比较3.0 mm和4.5 mm孔径下,IOL在居中、不同程度偏心和倾斜时,远焦点处的50 lp/mm和100 lp/mm空间频率下的MTF值、MTF曲线和美国空军(the United States air force,USAF)分辨率测试图。结果IOL的屈光度越高,居中时MTF值和USAF分辨率越高,偏心和倾斜时下降幅度越大。偏心和倾斜程度越大,3种屈光度IOL的MTF值和USAF分辨率越低。在2种孔径下各IOL在50 lp/mm和100 lp/mm空间频率下的MTF值均从偏心0.3 mm时开始下降。+10 m^(-1) IOL在3.0 mm孔径下,倾斜5°时50 lp/mm空间频率下的MTF值开始下降,而在4.5 mm孔径、2种空间频率下,倾斜3°MTF值就开始下降。+20 m^(-1)和+30 m^(-1) IOL在2种孔径下,MTF值均从倾斜3°开始下降。相同位置条件下,3.0 mm孔径下测量的IOL的MTF值和USAF分辨率较4.5 mm孔径下更高。结论非球面单焦点IOL SN60WF的屈光度越高,居中时光学质量越好,偏心和倾斜时光学质量下降幅度越大。3种屈光度IOL发生0.30 mm偏心和5°及以上倾斜时,光学质量均较居中时下降,同时小孔径下测量IOL的光学质量优于大孔径。
Objective To investigate the optical properties of aspheric monofocal intraocular lenses(IOLs)with different diopters under centered and the effects of different degrees of decentration and tilt on the optical quality of IOLs with different diopters.Methods OptiSpheric IOL R&D,an in vitro optical quality testing system,was used to evaluate the optical quality of aspheric monofocal IOL AcrySof IQ SN60WF with three different diopters of+10 m^(-1),+20 m^(-1) and+30 m^(-1).The modulation transfer func-tion(MTF)values at spatial frequencies of 50 lp/mm and 100 lp/mm,the MTF curve and the United States air force(USAF)res-olution test chart were measured and compared for the IOLs under centered,different degrees of decentration,and tilt at apertures of 3.0 mm and 4.5 mm.Results The higher diopter of the IOL,the higher the of MTF values and the higher of USAF resolution under the centered position,and the faster decreases of the MTF values and USAF resolution when decentered and tilted.The greater the degree of decentration and tilt,the greater the decrease of MTF value and USAF resolution of the three diopter IOLs.At 2 aperture sizes,MTF values at spatial frequencies of 50 lp/mm and 100 lp/mm of IOLs decreased by 0.3 mm from the centered position when they were decentered.The MTF values at 50 lp/mm spatial frequency for the+10 m^(-1) IOL at an aperture of 3.0 mm started to decrease at a tilt of 5°,whereas at an aperture of 4.5 mm and 2 spatial frequencies,the MTF value started to decrease at a tilt of 3°.The MTF values of+20 m^(-1) and+30 m^(-1) IOL started decreasing from a tilt of 3°at both apertures.MTF values and USAF resolution of the IOLs measured at 3.0 mm aperture were higher than at 4.5 mm aperture at the same positional conditions.Conclusion The higher the diopter of aspheric monofocal IOL SN60WF,the better the optical quality when centered,and the faster the optical quality decreased when decentered and tilted.Optical quality decreased at 0.30 mm decentration and tilts of 5°and above for the IOLs compared to when centered.Additionally,the optical quality of IOLs measured at small apertures is superior to that of large apertures.
作者
潘若琳
廖萱
兰长骏
谭青青
谢丽暄
黄欢
秦苏云
王艳
PAN Ruolin;LIAO Xuan;LAN Changjun;TAN Qingqing;XIE Lixuan;HUANG Huan;QIN Suyun;WANG Yan(Department of Catract,Chengdu Eastern Aier Eye Hospital,Chengdu 610051,Sichuan,China;Department of Ophthalmology,Affiliated Hospital of North Sichuan Medical College,Nanchong 637000,Sichuan,China;Medical School of Ophthalmology&Optometry,North Sichuan Medical College,Nanchong 637000,Sichuan,China)
出处
《山东大学耳鼻喉眼学报》
2026年第1期38-46,共9页
Journal of Otolaryngology and Ophthalmology of Shandong University
基金
四川省医学科研课题(S21011)
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
体外测试
光学质量
偏心
倾斜
Intraocular lens
In vitro test
Optical quality
Decentration
Tilt
