A 10-year-old boy presented to a cornea subspecialty clinic with a 6-month history of intermittent redness, swelling, and itching of the right eye. He had seasonal allergies but was otherwise healthy. He had not been wearing his contact lenses since the episodes started. The patient’s symptoms persisted despite previous treatment regimens with topical corticosteroids for atopic conjunctivitis and topical antibiotics for staphylococcal blepharitis. Conjunctival cultures for bacteria or viruses (including adenovirus and herpes simplex virus) were negative.