Ophthalmology Orbit 1ccc51ff Most common cause of fungal orbital cellulitis in diabetes A Aspergillus B Fusarium C Mucormycosis D Candida High-Yield Explanation Ans. (c) MucormycosisRef: Kanski 7/e, p. 91, Parson's 22/e, p. 242Mucormycosis often affects patients with diabetic ketoacidosis or immunosuppression.