In cases with previous photorefractive keratectomy (PRK), there is a risk o
f developing severe haze after laser in situ keratomileusis (LASIK). We rep
ort 3 patients (4 eyes) who developed severe haze after LASIK treatment for
residual myopia following PRK Both PRK and LASIK procedures were performed
using the VISX 20/20 excimer laser. We report the grade of haze, amount of
regression, and visual acuity after the patients were treated with topical
steroids. In 2 eyes, the uncorrected visual acuity was 1.0 after 1 year wi
th grade I haze. In the other 2 eyes, there was a residual refractive error
, and the best spectacle-corrected visual acuity was 0.7 with grade II haze
. (C) 2001 ASCRS and ESCRS.