Excimer Laser (193 nm) Myopic Keratomileusis in Sighted and Blind Human Eyes

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Abstract
Ten blind and 13 sighted human eyes underwent excimer laser (193 nm) keratomileusis. The radiant exposure was 180 mJ/cm2 with an ablation zone diameter of 3.5 mm. The follow-up of the blind eyes ranged from 9 to 11 months, whereas that of the sighted eyes was at least 6 months. The intended refraction change was -3.0 and -5.0 D in the blind eyes and ranged from -1.5 to -7.0 D in the sighted eyes. After 3 months, 12 of 13 sighted eyes (92%) achieved a refraction between +/- 1.0 D, whereas after 6 months 77% of the refractions were in this range. Temporary subepithelial haze occurred in all eyes except some of the -3.0 D blind eyes. After 6 months, the subepithelial haze had resolved to a clinical non-significant level (trace to grade 0.5 haze), except in one eye that showed a focal scar.