Myopic laser in situ keratomileusis retreatment: Incidence and associations. Issue 10 (October 2016)

• Record Type: Journal Article
• Authors: Pokroy, Russell; Mimouni, Michael; Sela, Tzahi; Munzer, Gur; Kaiserman, Igor
• Is Part Of: Journal of cataract and refractive surgery. Volume 42:Issue 10(2016)
• Publication Date: 2016-10
• Subjects: 617.7
• DOI: 10.1016/j.jcrs.2016.07.032
• Languages: English
• ISSNs: 0886-3350

Abstract

Abstract : Purpose : To determine the factors associated with retreatment after laser in situ keratomileusis (LASIK) for myopic eyes in the modern LASIK era. Setting : Care‐Vision Laser Centers, Tel‐Aviv, Israel. Design : Retrospective cohort study. Methods : All cases of myopic LASIK performed between January 2005 and December 2012 were analyzed according to whether they had retreatment refractive surgery. Result : The study evaluated 9177 right eyes in 9177 consecutive LASIK cases. The mean preoperative subjective spherical equivalent and astigmatism were −3.30 diopters (D) ± 1.53 (SD) (range −0.50 to −12.00 D) and 0.69 ± 0.94 D (range 0.00 to 6.00 D), respectively. Of the eyes, 165 (1.80%) had at least 1 retreatment. Over the course of the study, the 2‐year retreatment rate decreased from 2.58% to 0.38% ( P < .001). Multiple binary logistic regression analysis showed that older age (odds ratio [OR], 1.03; P = .007), higher astigmatism (OR, 1.23; P = .008), sphere (OR, 1.15; P = .026), and mean keratometric power (OR, 1.13; P = .036) significantly increased the odds for retreatment. A larger optical zone ablation (7.0 mm) significantly decreased the odds for retreatment (OR, 0.10; P = .022). Significant cutoffs associated with retreatments were age greater than 50 years, astigmatism more than 1.5 D, and sphere more than 2.0 D. Conclusions : Older age and higher preoperative astigmatism, sphere, and corneal steepness were associated with myopic LASIK retreatment. Larger optical ablation zones might decrease retreatment rates. Financial Disclosure : None of the authors has a financial or proprietary interest in any material or method mentioned.