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Abstract

Purpose: To evaluate laser in situ keratomileusis (LASIK) for induced hyperopia after radial keratotomy.Methods: Twenty eyes had LASIK for induced hyperopia after radial keratotomy. All eyes were treated using the Nidek excimer laser (EC-5000) and the Hansatome microkeratome with a 905mm ring and 180mm plate. Hyperopic correction was done using a 5.5 to 7.5mm ablation zone.Results: Mean preoperative spherical equivalent refraction was +3.44 ± 1.25D (range, +0.88 to +6.00D). Postoperatively, all eyes achieved a reduction in hyperopia. At follow-up (range, 6 to 24 mo), mean refraction was -0.66 ± 1.00D (range, -2.25 to +1.50D). At the last examination, 11 eyes (55%) were within ±0.50D, 16 eyes (80%) were within ±1.00D, and 19 eyes (95%) were within ±2.00D of emmetropia. In terms of best spectablecorrected visual acuity, 10 eyes (50%) saw 20/20 or better, 16 eyes (80%) saw 20/25 or better, and 18 eyes (90%) saw 20/40 or better. Regarding loss and gain of visual acuity lines, 11 eyes (55%) lost no lines, 2 eyes (10%) lost more than 2 lines, 1 eye (5%) lost 2 lines, 3 eyes (15%) lost 1 line, 1 eye (5%) gained 1 line, and 2 eyes (10%) gained 2 lines of visual acuity. Keratometric power increased from a preoperative mean of 37.32 ± 2.44D (range, 33.80 to 43.13D) to a postoperative mean of 39.64 ± 1.81D (range, 37.42 to 43.74D). Complications included 4 eyes with incisions that opened without any risk to the patient and in 2 eyes, epithelium ingrowth occurred in the interface.Conclusion: LASIK for induced hyperopia after radial keratotomy is safe and effective, without vision-threatening complications.Laser in situ Keratomileusis for hyperopia after thermal Keratoplasty