“…In noninfectious conditions such as BKC, corneal anesthesia, or exposure keratopathy, the mechanism of CN is poorly understood but is most likely related to weakness in the integrity and function of the blood vessel barrier provided by the limbal stem cells. 4 In adults, CN has been reported to respond to numerous treatment modalities including topical corticosteroids and nonsteroidal anti-inflammatory drops, 5 corneal argon laser photocoagulation, 6 photodynamic therapy, 7 fine needle diathermy (FND), 8,9 electrolysis-needle cauterization, 10 repeated bevacizumab injections (Avastin; Genentech, San Francisco, CA), 11 and ligation of blood vessel origin. 12 No treatment modality has been reported to be completely effective in eradicating blood vessels from the cornea and often, repeated treatments are required.…”