Simliar to Pterygium, Pinguecula is thought to be caused by exposure to UV or sunlight rays. Development of Pinguecula displays as a yellow growth usually found on the side of the eye closest to the nose, but can develop on both sides of the eye. While these growths are benign, left untreated they can develop into a Pterygium, and a proper diagnosis is necessary to not confuse these symptoms. Effects most commonly associated with Pinguecula are swollen, red and irritated eyes.
While a number of different typed of lesions may be harmless, the development of cysts on or around the eye can sometimes indicate other health issues. Cysts differ from lesions in that they are filled with fluid. If a lesion or cyst obstructs the eyelid, significant damage can result from the eyelid’s inability to protect the eye, possibly even damaging vision.