Optical quality of toric intraocular lens implantation ... - Semantic Scholar

1 downloads 0 Views 305KB Size Report
·METHODS: Fifty-two eyes of forty-four patients with regular corneal astigmatism of at least 1.00 D underwent implantation of AcrySof toric intraocular lens, ...
Optical quality of toric intraocular lens

窑Clinical Research窑

Optical quality of toric intraocular lens implantation in cataract surgery Tianjin Medical University Eye Hospital, Tianjin 300384, China 2 Xiamen Eye Center of Xiamen University, Xiamen 361000, Fujian Province, China Co-first authors: Xian-Wen Xiao and Jing Hao Correspondence to: Hong Zhang. Tianjin Medical University Eye Hospital, No.251, Fu Kang Road, Nan Kai District, Tianjin 300384, China. [email protected]; [email protected] Received: 2013-10-17 Accepted: 2014-02-24 1

·AIM: To analyze the optical quality after implantation of toric intraocular lens with optical quality analysis system. Fifty -two eyes of forty -four patients with

regular corneal astigmatism of at least 1.00 D underwent implantation of AcrySof toric intraocular lens, including T3 group 19 eyes, T4 group 18 eyes, T5 group 10 eyes, T6 group 5 eyes. Main outcomes evaluated at 3mo of follow -up, included uncorrected distance visual acuity (UDVA), corrected distance visual acuity (CDVA), residual refractive cylinder and intraocular lens (IOL) axis rotation. Objective optical quality were measured using optical

quality analysis system (OQAS 域誖 , Visiometrics, Spain), included the cutoff frequency of modulation transfer function (MTFcutoff), objective scattering index (OSI), Strehl ratio, optical quality analysis system value (OV) 100% , OV 20% and OV 9% [the optical quality analysis system (OQAS) values at contrasts of 100%, 20%, and 9%].

·RESULTS: At 3mo postoperative, the mean UDVA and CDVA was 0.18 依0.11 and 0.07 依0.08 logMAR; the mean residual refractive cylinder was 0.50 依0.29 D; the mean

toric IOL axis rotation was 3.62 依1.76 degrees, the mean MTFcutoff, OSI, Strehl ratio, OV 100% , OV 20% and OV 9% were 22.862依5.584, 1.80依0.84, 0.155依0.038, 0.76依0.18,

0.77依0.19 and 0.78依0.21. The values of UDVA, CDVA, IOL axis rotation, MTFcutoff, OSI, Strehl ratio, OV100% , OV20% and OV9% depending on the power of the cylinder of the implantation were not significantly different ( >0.05), except the residual refractive cylinder (