International Journal of General Medicine (Jun 2021)
Stability of Various Types of Aspheric Intraocular Lenses After Implantation: A One-Year Retrospective Study
Abstract
Yuan Ning,1 Yushuang Shao,1 Jiangyue Zhao,1 Jinsong Zhang,1 Mingwu Wang,2 Yu Qin1 1Department of Ophthalmology, The Fourth Affiliated Hospital of China Medical University, Eye Hospital of China Medical University, Key Lens Research Laboratory of Liaoning Province, Shenyang, 110005, People’s Republic of China; 2Department of Ophthalmology and Vision Science, The University of Arizona College of Medicine, Tucson, Arizona, 85711-1824, USACorrespondence: Yu QinDepartment of Ophthalmology, The Fourth Affiliated Hospital of China Medical University, Eye Hospital of China Medical University, Key Lens Research Laboratory of Liaoning Province, No. 11 Xinhua Road, Heping District, Shenyang, 110005, People’s Republic of ChinaTel +86 24 62035015Fax +86 24 62035015Email [email protected]: The aim of the present study was to evaluate the stability of four different types of aspheric intraocular lenses (IOLs) after implantation.Methods: This retrospective study included 124 eyes implanted with four different types of aspheric IOLs including a one-piece four-loop fixed hydrophilic acrylic IOL, a one-piece flat fixed acrylic IOL, a one-piece two-loop fixed acrylic IOL, and a three-piece two-loop fixed silicone IOL. IOL decentration, tilt, and ocular coma‐like aberration (coma) at one-week, one-month, three-month, and one-year time points were evaluated postoperatively.Results: IOL decentration, tilt, and coma in the AO, 36A, IQ, and KS-AiN implantation groups were statistically significantly different one week and one year postoperatively (p < 0.01). There were significant differences between each of the pairs of groups (p < 0.01), except for coma between the AO and 36A implantation groups one week postoperatively (p > 0.05). When comparing the different time points (ie, one week, one month, three months, and one year postoperatively), IOL decentration, tilt, and coma were significantly different in each group (p < 0.05). IOL decentration, tilt, and coma in each group increased over the period from one week to one year postoperatively. A positive linear correlation was observed between IOL decentration or tilt and coma one year postoperatively (p < 0.01).Conclusion: One-piece multi-point fixed acrylic IOLs demonstrate better stability when compared with three-piece two-point fixed silicone IOLs. IOL decentration, tilt, and coma increase gradually over time. Ocular coma‐like aberrations are influenced by the stability of IOLs.Keywords: stability, aspheric intraocular lens, IOL, decentration, tilt, coma
