Giant papillary conjunctivitis (GPC) causes swelling, redness, and irritation in the lining of the membrane inside your eyelids. Contact lens wearers have the highest risk of developing GPC.

Dr. Colby answers the question: 'What Is Giant Papillary Conjunctivitis?' Aug. 24, 2009— -- Question: What is Giant Papillary Conjunctivitis (GPC), what causes it and if I get it, will I have ...

Giant papillary conjunctivitis (GPC) is a condition affecting the eye where small, round bumps — known as papillae — develop inside the eyelid, causing irritation and other symptoms.