Effect of Facial Parameters in Primary Acquired Nasolacrimal Duct Obstruction.

Purpose: In this study, the authors aimed to identify facial and nasal parameters, which may create an anatomic disposition toward obstruction in patients with primary acquired nasolacrimal duct obstruction. Materials and Methods: Forty-eight patients (14 males and 34 females) who presented to the ophthalmology outpatient clinic and were diagnosed with primary acquired nasolacrimal duct obstruction between January 2014 and January 2015 were included in the study. The control group comprised 59 patients (38 females and 21 males) without nasolacrimal duct obstruction. Measurements of nasal height, length, and depth, presence of a nasal hump, alar width and alar angle, distance between the maxillary bone nasal notches, and right and left distances between outer canthi and corners of the mouth were made using photographs of the patients. The presence of facial asymmetry was also assessed. Results: Facial asymmetry (P = 0.014) and nasal hump (P = 0.048) were more common in the patient group. The patient group had smaller nasal radix depth (P

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