Al-Mujaini, A., Wali, U., & Al-Khabori, M. (2009). Functional Endoscopic Sinus Surgery: Indications and Complications in Ophthalmic Field. Oman Medical Journal, 24(2). https://omanscience.com/en/articles/functional-endoscopic-sinus-surgery-indications-and-complications-in-ophthalmic-field