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Corneal iron ring after hyperopic laser-assisted in situ keratomileusis
Purpose:
To report a new corneal iron ring after hyperopic laser-assisted in situ keratomileusis (LASIK).
Methods:
Three patients underwent hyperopic LASIK for the correction of hyperopia in both eyes. Spherical equivalent refraction of the patients ranged from +3.37 to +6.50 diopters. LASIK procedure was performed using automated corneal shaper and 193-nm argon fluoride excimer laser.
Results:
Both eyes of the patients were noted to have a corneal iron ring located at the paracentral area at 6-7 months after surgery. The localization of iron ring corresponded with outside border of central steep zone. Twelve-month examination showed there was no change in color, shape, and density of corneal iron ring.
Conclusions:
Corneal topographic changes induced by hyperopic LASIK may cause corneal iron ring to develop.