What Percentage of Contact Lens Wearers Develop Giant Papillary Conjunctivitis (GPC)?
Giant Papillary Conjunctivitis is a chronic inflammatory condition characterized by the formation of large bumps called papillae on the underside of the upper eyelid. In 2026, we categorize this condition as a hybrid disorder involving both mechanical trauma and a Type I and Type IV immunological response. The mechanical component stems from the repeated friction of the eyelid sliding over the edge or surface of a contact lens thousands of times per day. This physical irritation is compounded by the accumulation of denatured proteins and environmental allergens on the lens surface, which the body identifies as foreign invaders, triggering a localized allergic reaction.
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