135 eyes of 135 patients treated between 2005 and 2017 will be included in this study. The diagnosis of functional epiphora was made based on a patent lacrimal system with a delay in the fluorescein dye disappearance test (FDDT) or dacryoscintigraphy (DSG) without any ocular surface or eyelid abnormalities. The absence of epiphora and normalization of FDDT postoperatively was defined as success. The study's hypothesis is that external DCR with a suitable technique will have better results compared to endonasal and transcanalicular DCR
Study Type
INTERVENTIONAL
Allocation
NON_RANDOMIZED
Purpose
TREATMENT
Masking
SINGLE
Enrollment
135
The resistance of the lacrimal drainage is lowered by creating a new ostium between the lacrimal sac and nasal cavity via skin incision.
The resistance of the lacrimal drainage is lowered by creating a new ostium between the lacrimal sac and nasal cavity via endonasal route.
The resistance of the lacrimal drainage is lowered by creating a new ostium between the lacrimal sac and nasal cavity via transcanalicular route.
McMaster University
Hamilton, Ontario, Canada
Beyoglu Eye Research Hospital
Istanbul, Turkey (Türkiye)
Percentage of patients who report resolution of theri tearing and normalization of fluorescein dye disappearance test.
Time frame: Last follow-up time, approximately 6 months
Number of patients who have continuing epiphora after the surgery with an anatomically blocked tear duct.
Time frame: Last follow-up time, approximately 6 months
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