Bilateral Optic Disc Edema Secondary to Severe Vitamin A Deficiency: A Rare Cause of Acute Vision Loss. - Markowitz, Daniel M.; Silverman, Rebecca F.; Colwell, Lauren; Wibbelsman, Turner D.; Pericic, Danijel Josip; Harish, Shruthi; Thornton, Sarah (Case Reports in Ophthalmology, 2026)