Effects of intraocular lenses with different diopters on chromatic aberrations in human eye models

BMC Ophthalmology

Research Article

Xiaoyong Yuan¹  Xin Tang¹  Hui Song¹ 

[1] Tianjin Eye Hospital, Tianjin Key Laboratory of Ophthalmology and Vision Science, Clinical College of Ophthalmology, Tianjin Medical University, No. 4 Gansu Rd, Heping District, 300020, Tianjin, China;

关键词: Intraocular lens;    Computer simulation;    Diopter;    Chromatic aberration;    Modulation transfer function;   

DOI  :  10.1186/s12886-016-0184-6

 received in 2014-08-30, accepted in 2016-01-06,  发布年份 2016

来源: Springer

【 摘 要 】

BackgroundIn this study, the effects of intraocular lenses (IOLs) with different diopters (D) on chromatic aberration were investigated in human eye models, and the influences of the central thickness of IOLs on chromatic aberration were compared.MethodsA Liou-Brennan-based IOL eye model was constructed using ZEMAX optical design software. Spherical IOLs with different diopters (AR40e, AMO Company, USA) were implanted; modulation transfer function (MTF) values at 3 mm of pupil diameter and from 0 to out-of-focus blur were collected and graphed.ResultsMTF values, measured at 555 nm of monochromatic light under each spatial frequency, were significantly higher than the values measured at 470 to 650 nm of polychromatic light. The influences of chromatic aberration on MTF values decreased with the increase in IOL diopter when the spatial frequency was ≤12 c/d, while increased effects were observed when the spatial frequency was ≥15 c/d. The MTF values of each IOL eye model were significantly lower than the MTF values of the Liou-Brennan eye models when measured at 555 nm of monochromatic light and at 470 to 650 nm of polychromatic light. The MTF values were also found to be increased with the increase in IOL diopter.ConclusionWith higher diopters of IOLs, the central thickness increased accordingly, which could have created increased chromatic aberration and decreased the retinal image quality. To improve the postoperative visual quality, IOLs with lower chromatic aberration should be selected for patients with short axial lengths.

【 授权许可】

CC BY   
© Song et al. 2016