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Miosis (or myosis, from Ancient Greek μύειν, ''mūein'', "to close the eyes") is a term with various definitions, which generally include constriction of the pupil. The opposite condition, mydriasis, is the dilation of the pupil. Anisocoria is the condition of one pupil being more dilated than the other. ==Definitions== Definitions of miosis include: * Constriction of the pupil that is excessive,〔(Farlex medical dictionary ) citing: * Miller-Keane Encyclopedia & Dictionary of Medicine, Nursing, and Allied Health, Seventh Edition. * Saunders Comprehensive Veterinary Dictionary, 3 ed.〕 relative to the amount of light the pupil receives * Constriction of the pupil to a diameter of less than two millimeters〔(Farlex medical dictionary ) citing: Millodot: Dictionary of Optometry and Visual Science, 7th edition.〕 * Constriction of the pupil with causes including both abnormal and physiological ones.〔(Farlex medical dictionary ) citing: The American Heritage Medical Dictionary. Copyright 2007〕 * Pupillary constriction by abnormal causes.〔(Farlex medical dictionary ) citing: Mosby's Medical Dictionary, 8th edition.〕 抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』 ■ウィキペディアで「miosis」の詳細全文を読む スポンサード リンク
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