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Argyll Robertson pupil

Ar·gyll Rob·ert·son pu·pil [ r gīl róbbərtsən pyp'l ]


noun 
Definition:
 
pupil unconstricted in bright light: a pupil that does not constrict when exposed to bright light but that contracts normally when the eye focuses on a near object

[Late 19th century. After Douglas Moray Argyll Robertson (1837-1909), Scottish ophthalmic surgeon]
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