Can you tell me about giant papillary conjunctivitis?

Yes: Giant papillary conjunctivitis (gpc) is a reactive conjunctivitis. It is often due to a chronic irritant (such as contact lenses or a prosthetic eye) rubbbing on the eyelid. It can also occur with severe allergic conjunctivitis (vernal conjunctivitis is an example). It can be very uncomfortable. Treatment is typically with topical corticosteroids and should be monitored by an ophthalmologist.