PURPOSE: To assess a new method for decreasing corneal ablated surface irregularities after photorefractive keratectomy (PRK) and laser in situ keratomileusis (LASIK) by performing a final smoothing immediately after the treatment. METHODS: One hundred forty-seven eyes with ablation irregularities after PRK or LASIK using the Nidek EC,5000 excimer laser and examined with the Nidek EAS 1000, were randomized into two groups: 74 eyes had final smoothing and 73 eyes were patched immediately. Preoperative mean refraction for the smoothing group was -7.55 ± 2.50 D and for the patched group, it was -7.30 ± 1.90 D, (p = 0.04). RESULTS: At 12 months after treatment, mean haze was 0.5 ± 0.3 in the smoothing group and 1.2 ± 0.4 in the patched group (p = 0.006); mean spectaclecorrected visual acuity was 1.1 ± 0.25 in the smoothing group and 0.95 ± 0.18 in the patched group (p = 0.02); the percentages of eyes within 1.00 D of the planned correction was 68% in the smoothing group and 33% in the patched group. CONCLUSION: Performing a final smoothing immediately after PRK or LASIK improves refractive and optical outcomes.
Effect of decreasing surface and interface irregularities after photorefractive keratectomy and laser in situ keratomileusis on optical and functional outcomes
Vinciguerra P;
1998-01-01
Abstract
PURPOSE: To assess a new method for decreasing corneal ablated surface irregularities after photorefractive keratectomy (PRK) and laser in situ keratomileusis (LASIK) by performing a final smoothing immediately after the treatment. METHODS: One hundred forty-seven eyes with ablation irregularities after PRK or LASIK using the Nidek EC,5000 excimer laser and examined with the Nidek EAS 1000, were randomized into two groups: 74 eyes had final smoothing and 73 eyes were patched immediately. Preoperative mean refraction for the smoothing group was -7.55 ± 2.50 D and for the patched group, it was -7.30 ± 1.90 D, (p = 0.04). RESULTS: At 12 months after treatment, mean haze was 0.5 ± 0.3 in the smoothing group and 1.2 ± 0.4 in the patched group (p = 0.006); mean spectaclecorrected visual acuity was 1.1 ± 0.25 in the smoothing group and 0.95 ± 0.18 in the patched group (p = 0.02); the percentages of eyes within 1.00 D of the planned correction was 68% in the smoothing group and 33% in the patched group. CONCLUSION: Performing a final smoothing immediately after PRK or LASIK improves refractive and optical outcomes.File | Dimensione | Formato | |
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