Argyll Robertson pupil

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Argyll Robertson pupil (ar-gyl rob-ert-sŏn) n. a disorder of the eyes, which may result from syphilis or diabetes, in which the pupillary (light) reflex is absent. Although the pupils contract normally for near vision, they fail to contract in bright light.[ D. Argyll Robertson (1837–1909), Scottish ophthalmologist]

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