A Cause of Corneal Collagen Cross Linking Failure: Keratoconus Associated with the Floppy Eyelid Syndrome

Floppy eyelid syndrome FES is a condition strongly associated with keratoconus. The characteristic findings are an upper lid that may be readily everted, tarsal laxity, and diffuse papillary conjunctival changes. Floppy eyelid syndrome could be a risk factor for corneal collagen cross-linking (CXL) failure.