Characteristics and factors associated with intraocular lens tilt and decentration after cataract surgery. Issue 8 (August 2020)

• Record Type: Journal Article
• Authors: Chen, Xiaoyun; Gu, Xiaoxun; Wang, Wei; Xiao, Wei; Jin, Guangming; Wang, Lanhua; Dai, Ye; Zhang, Enen; Ruan, Xiaoting; Liu, Zhenzhen; Luo, Lixia; Liu, Yizhi
• Is Part Of: Journal of cataract and refractive surgery. Volume 46:Issue 8(2020)
• Page Start: 1126
• Page End: 1131
• Publication Date: 2020-08
• Subjects: 617.7
• DOI: 10.1097/j.jcrs.0000000000000219
• Languages: English
• ISSNs: 0886-3350

Abstract

Abstract : This prospective study demonstrated that pars plana vitrectomy surgical history, axial length, lens thickness, and overlarge capsulorhexis may all affect long-term tilt and decentration of the intraocular lens. Abstract : Purpose: To analyze the characteristics and factors associated with intraocular lens (IOL) tilt and decentration after uneventful phacoemulsification with IOL implantation. Setting: Zhongshan Ophthalmic Center, Sun Yat-sen University, Guangzhou, China. Design: Cross-sectional study. Methods: All patients underwent a general ophthalmologic examination and anterior segment photography. IOL tilt and decentration were measured with a second-generation anterior segment optical coherence tomography (Casia2). Univariate and multivariate regression analyses were performed to assess the association between IOL tilt and decentration with ocular biometric and systemic parameters, and the visual acuity. Results: A total of 196 eyes of 196 patients were enrolled in this study. IOLs showed a mean tilt of 4.8 degrees toward the inferotemporal direction, and the mean decentration was 0.21 mm. Both eyes presented a mirror symmetry relationship. Twenty-two eyes (11.22%) had a tilt greater than 7 degrees, and 21 eyes (10.72%) had a decentration more than 0.4 mm. Multivariate regression analysis showed previous pars plana vitrectomy (PPV) and short axial length (AL) were associated with greater IOL tilt ( P = .014 and P < .001). In addition, long AL, thicker lens, and less capsulorhexis–IOL overlap were positively correlated with decentration ( P < .001, P = .029, and P = .026). Corrected distance visual acuity did not directly correlate with IOL tilt and decentration ( P = .417 and P = .550). Conclusions: PPV history and short AL were associated with greater IOL tilt, whereas longer AL, thicker lens, and overlarge capsulorhexis contribute to greater decentration. Implantation of toric and multifocal IOLs in these patients should be cautious.