S Phonglertnapagorn

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Two hundred and seventy patients with idiopathic obstruction of the lacrimal passage between the sac and the nasolacrimal duct, who underwent external dacryocystorhinostomy at the Department of Ophthalmology, Ramathibodi Hospital were studied retrospectively. All the patients had the operations between 1983 and 1987; 240 were female (88.9%) and 30 were male(More)
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