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Wavefront-guided Laser in situ Keratomileusis With the Bausch & Lomb Zyoptix System

2004; Slack Incorporated (United States); Volume: 20; Issue: 1 Linguagem: Inglês

10.3928/1081-597x-20040101-07

1938-2391

C Cosar, Gülbin Saltuk, A. Bozkurt Şener,

Intraocular Surgery and Lenses

ABSTRACT PURPOSE: To evaluate the clinical results of wavefront-guided laser in situ keratomileusis (LASIK) with the Zyoptix system. METHODS: Twelve patients (24 eyes) underwent wavefront-guided LASIK with the Bausch & Lomb Zyoptix system. Uncorrected and best spectacle-corrected visual acuity and manifest refraction were measured at postoperative day 1, week 1, and months 1 and 3. A subjective vision quality questionnaire evaluated light sensitivity, dryness, tearing, glare, halos, ghost images, and difficulties in night driving, preoperatively and 3 months postoperatively. RESULTS: Preoperatively, mean sphere was -3.70 ± 2.33 D (range -0.50 to -8.00 D), mean cylinder was -0.90 ± 0.98 D (range 0 to -3.00 D), and mean spherical equivalent refraction was -4.15 ± 2.16 D (range -1.38 to -8.25 D). Three-month postoperative spherical equivalent refraction was within ±0.50 D of emmetropia in 17 eyes (70.8%) and within ±1.00 D in 22 eyes (91.7%). At 3 months postoperatively, no eyes lost any lines of BSCVA and eight eyes (33.3%) gained 2 lines. The ratio of postoperative BSCVA to preoperative BSCVA (safety) was 1.05 ± 0.09 (range 1.00 to 1.20) at 1 month and 1.07 ± 0.10 (range 1.00 to 1.29) at 3 months. The ratio of postoperative UCVA to preoperative BSCVA (efficacy) was 0.96 ± 0.12 (range 0.80 to 1.20) at 1 month and 0.95 ± 0.12 (range 0.8 to 1.2) at 3 months. The subjective vision quality questionnaire revealed less tearing, fewer halos, and less difficulty in night driving after wavefront-guided LASIK. Comparison of higher order optical aberrations before and after surgery was not done. CONCLUSIONS: Wavefront-guided LASIK with the Bausch & Lomb Zyoptix system was safe and effective in correcting low to moderate myopic refractive error. [J Refract Surg 2004;20:35-39]