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what is the main age range of the patients suffering from acquired nasolacrimal duct obstruction?
Middle-age to elderly.
There is a largely cystic right side lacrimal sac and distended right side nasolacrimal duct with the impression of the cystic lacrimal sac on related medial rectus muscle tendon and a uveo-scleral layer of the right eye globe. Note the focal mucosal thickening and mucosal contact within the anterior inferior nasal cavity interposed the adjacent concha and medial wall of the distal nasolacrimal duct.