Ten patients underwent excimer laser ablation due to nebula formation
at keratoconus. The nebulae interfered significantly with contact lens
fit or wearing time. The mean follow-up time in these patients was 16
.5 months. Following surgery all patients could be successfully fitted
with a contact lens and thereby obtain good visual acuity. Furthermor
e, contact lens wearing time was 8 hours or more in all cases. In 2 pa
tients the nebulae recurred but were successfully retreated.