PINGUECULA

yellowish nodule in the conjunctiva at the front of the eye, usually but not always on the nasal side. The conjunctiva is the mucous membrane that lines the eyelid and extends over part of the surface of the eyeball. Pinguecula occurs in elderly persons and is thought to represent degeneration in the conjunctiva as a result of exposure to wind and dust. The condition does not require medical or surgical treatment.