Tehran University of Medical Sciences Iranian Journal of Allergy, Asthma and Immunology 1735-1502 20 4 2021 08 07 505 508 EN Dilek Özkaya Department of Ophthalmology, Faculty of Medicine, Süleyman Demirel University, Isparta, Turkey Gülşah Usta Department of Ophthalmology, Faculty of Medicine, Süleyman Demirel University, Isparta, Turkey Umut Karaca Department of Ophthalmology, Faculty of Medicine, Süleyman Demirel University, Isparta, Turkey 2020 06 30 2020 12 26 Corneal shield ulcer is an uncommon but serious complication of vernal keratoconjunctivitis (VKC) that can threaten visual acuity. We present a 12-year-old case with a corneal shield ulcer on the superior part of the cornea in the right eye. We learned from his history that he was treated with topical cyclosporine A (CsA) and corneal debridement was performed for the same complaints six months ago. His complaints recurred six months after ceasing topical CsA voluntarily. Topical anti-allergic and CsA treatments were commenced, we also performed corneal debridement. During his follow-ups, the corneal ulcer healed leaving a scar as opacity and neovascularization. This case highlights the role of the anti-inflammatory effect of CsA in preventing the recurrence of shield ulcers. https://ijaai.tums.ac.ir/index.php/ijaai/article/view/2877 https://ijaai.tums.ac.ir/index.php/ijaai/article/download/2877/1685