Argyll Robertson pupils

Etymology
Named after Douglas Argyll Robertson (1837–1909), a Scottish ophthalmologist and surgeon, who described the condition in the mid-1860s in the context of neurosyphilis.

Noun

 * 1)  Pupils which narrow to track an object as it approaches the face, but which will not narrow in reaction to increased light ("accommodating, but not reactive"); a symptom of the neurosyphilis stage syphilis infection.