Minoru Tomita1, Miyuki Watabe2, Mariko Mita2, George O Waring2. 1. From Shinagawa LASIK Center (Tomita, Watabe, Mita), Chiyoda-ku, Tokyo, Japan; Wenzhou University (Tomita), Wenzhou, China; Storm Eye Institute (Waring), Medical University of South Carolina, and Magill Vision Center (Waring), Charleston, South Carolina, USA. Electronic address: tomita@shinagawa-lasik.com. 2. From Shinagawa LASIK Center (Tomita, Watabe, Mita), Chiyoda-ku, Tokyo, Japan; Wenzhou University (Tomita), Wenzhou, China; Storm Eye Institute (Waring), Medical University of South Carolina, and Magill Vision Center (Waring), Charleston, South Carolina, USA.
Abstract
PURPOSE: To evaluate the long-term outcomes of thin-flap laser in situ keratomileusis (LASIK) in eyes with thin corneas (central corneal thickness [CCT] <500 μm) but normal topography. SETTING: Private center, Tokyo, Japan. DESIGN: Retrospective randomized comparative study. METHOD: The efficacy, safety, predictability, and topography of LASIK were evaluated in eyes with a CCT of less than 500 μm but with normal topography (thin-cornea group) to 6 years postoperatively. The LASIK outcomes in the thin-cornea group were compared with those in eyes with a CCT of 500 μm or greater (control group). Analysis was performed to determine whether there were differences between the groups at the last checkup 3 to 4 years postoperatively. RESULTS: In the thin-cornea group (291 eyes; 146 patients), no significant differences were observed in LASIK outcomes when eyes were subdivided by the time of final checkup (3, 4, and ≥ 5 years). There was a significant difference in visual and refractive outcomes between 3 months postoperatively and the last checkup in the thin-cornea group and the control group (371 eyes; 193 patients). No significant difference in visual, refractive, or topography outcomes was observed between the 2 groups at the last checkup. CONCLUSIONS: Laser in situ keratomileusis in eyes with thin corneas was as safe and effective as and showed similar long-term stability in eyes with a CCT of 500 μm or greater. No eye in either group had a postoperative complication. FINANCIAL DISCLOSURE: No author has a financial or proprietary interest in any material or method mentioned.
RCT Entities:
PURPOSE: To evaluate the long-term outcomes of thin-flap laser in situ keratomileusis (LASIK) in eyes with thin corneas (central corneal thickness [CCT] <500 μm) but normal topography. SETTING: Private center, Tokyo, Japan. DESIGN: Retrospective randomized comparative study. METHOD: The efficacy, safety, predictability, and topography of LASIK were evaluated in eyes with a CCT of less than 500 μm but with normal topography (thin-cornea group) to 6 years postoperatively. The LASIK outcomes in the thin-cornea group were compared with those in eyes with a CCT of 500 μm or greater (control group). Analysis was performed to determine whether there were differences between the groups at the last checkup 3 to 4 years postoperatively. RESULTS: In the thin-cornea group (291 eyes; 146 patients), no significant differences were observed in LASIK outcomes when eyes were subdivided by the time of final checkup (3, 4, and ≥ 5 years). There was a significant difference in visual and refractive outcomes between 3 months postoperatively and the last checkup in the thin-cornea group and the control group (371 eyes; 193 patients). No significant difference in visual, refractive, or topography outcomes was observed between the 2 groups at the last checkup. CONCLUSIONS: Laser in situ keratomileusis in eyes with thin corneas was as safe and effective as and showed similar long-term stability in eyes with a CCT of 500 μm or greater. No eye in either group had a postoperative complication. FINANCIAL DISCLOSURE: No author has a financial or proprietary interest in any material or method mentioned.
Authors: Mohammad Reza Djodeyre; Jaime Beltran; Julio Ortega-Usobiaga; Felix Gonzalez-Lopez; Ana Isabel Ruiz-Rizaldos; Julio Baviera Journal: Clin Ophthalmol Date: 2016-03-29