GPC is associated with which factors?

GPC is associated with which factors?

• A. Vitamin A deficiency
• B. Glaucoma medications
• C. Bacterial keratitis only
• D. Mechanical, immunologic, SiHy due to higher modulus, overnight wear

Answer: (D)

Giant papillary conjunctivitis develops from a combination of mechanical irritation and an immune-mediated response to contact lens wear. The lens edge and lid movements create chronic friction on the upper tarsal conjunctiva, which stimulates papillary growth. Deposits and proteins on the lens can provoke an immunologic reaction, especially with repeated exposure. Silicone hydrogel lenses have a higher modulus, meaning they’re stiffer, which increases friction and microtrauma at the lid/conjunctival surface, amplifying the papillary response. Wearing lenses overnight further elevates risk by extending exposure to both the mechanical irritant and the deposited material, boosting the inflammatory process. The other options don’t capture these interrelated factors: vitamin A deficiency isn’t linked to GPC, glaucoma meds can cause surface irritation but aren’t the hallmark driver of GPC, and bacterial keratitis is a distinct infection rather than a papillary conjunctival reaction to lens wear.

Giant papillary conjunctivitis develops from a combination of mechanical irritation and an immune-mediated response to contact lens wear. The lens edge and lid movements create chronic friction on the upper tarsal conjunctiva, which stimulates papillary growth. Deposits and proteins on the lens can provoke an immunologic reaction, especially with repeated exposure. Silicone hydrogel lenses have a higher modulus, meaning they’re stiffer, which increases friction and microtrauma at the lid/conjunctival surface, amplifying the papillary response. Wearing lenses overnight further elevates risk by extending exposure to both the mechanical irritant and the deposited material, boosting the inflammatory process. The other options don’t capture these interrelated factors: vitamin A deficiency isn’t linked to GPC, glaucoma meds can cause surface irritation but aren’t the hallmark driver of GPC, and bacterial keratitis is a distinct infection rather than a papillary conjunctival reaction to lens wear.