TY - BOOK AU - Sari Hussein Soukarieh AU - Rania Ahmed Abdelsalam , AU - Tamer Ismail Gawdat , AU - Yehia Salah Eldin Mostafa , TI - Effect of posterior flap excision on outcome of dacryocytorhinostomy : : A retrospective comparative study / PY - 2011/// CY - Cairo : PB - Sari Hussein Soukarieh , KW - Anatomy of Nasolacrimal System KW - Evaluation of the Tearing Patient KW - Treatment Modalities of the Tearing Patient N1 - Thesis (M.Sc.) - Cairo University - Faculty of Medicine - Department of Ophthalmology; Issued also as CD N2 - This retrospective study was conducted in Cairo University hospitals and included 166 patients . Most of the patients were diagnosed with NLDO . The main complaint was excessive lacrimation . 65% were female and 35% were male . The aim of the study was to compare the effect of posterior lacrimal and nasal flaps on the outcome of external DCR ER -