Miosis

500px|náhled|Zúžení zornice u uživatele opiátů Miosis means narrowing of the pupil of the human eye. Mediates the sphincter pupillae muscle, innervated by the parasympathetic nerve from the Edinger-Westphal nucleus. It changes the amount of light that hits the retina, increases the depth of field, and facilitates the outflow of aqueous humor into Schlemm's canal.

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