Encysted corneal contact lens presenting as an eyelid mass

A 57-year-old woman presented with a 10 by 10 mm movable eyelid mass which had been present for 8 months before examination by me. Diagnostic exploration of the eyelid was performed, and a cyst containing a hard corneal contact lens was discovered. Further history obtained after surgery revealed that the patient had lost her contact lens approximately 4 years prior to the surgical exploration.