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The clinical demonstration of the ductular orifices of the human lacrimal gland is reported. Lacrimal fluid secretion can be shown after instillation of 2% sodium fluorescein. Ductular orifices are visible on biomicroscopy. In keratoconjunctivitis sicca the lacrimal fluid streams appear normal, or to be diminished or absent.
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Anthony J. Bron (1986) studied this question.
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