This is an ocular host antibody hypersensitivity reaction to conjunctival infection with bacteria, especially the Staphylococcus aureus antigen.
It presents with:
The limbus may be outlined by elongated ulcers and corneal infiltrates. Characteristically, the ulcers do not spread centrally.
Provided that a dendritic ulcer is excluded, marginal keratitis may be treated with topical antibiotics and steroids.
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