Late-onset interface keratitis after uneventful laser in situ keratomileusis

Although there have been many proposed etiologies for interface inflammatio n after laser in situ keratomileusis, the causative factor(s) remains an en igma. This case of late-onset interface inflammation suggests that the many previously suspected interface contaminants from the surgical environment were not involved. Transformation of a previously inert material to an infl ammatory stimulus is proposed as a potential cause; however, a sample of in flammatory focus was not obtained because of the immediate and complete res ponse to frequent topical steroid drops. (C) 2001 ASCRS and ESCRS.