PINGUECULUM A pingueculum is a localized, degeneration or thickening of this conjunctival tissue covering the white part of the eye. Typically, pinguecula are located on either side of the cornea but is more common on the nasal side. Pinguecula are very common in adults who spend a lot of time in sunny and/or windy environments. They consist of a fatty elastic tissue. They usually stay relatively small but they can cause inflammation of the eyes. Recent studies indicate that pinguecula may be stimulated by ultraviolet light from the sun. All spectacle eyewear corrections should contain an ultraviolet coating to help prevent further irritation.