Monocular elevator paresis, Argyll Robertson pupils and sarcoidosis.

A patient with sarcoidosis involving the central nervous system is described who developed monocular paralysis of elevation and Argyll Robertson pupils. A schema for the control system for vertical eye movements is presented as well as an explanation for monocular elevator palsy. The postulated lesion for monocular elevator palsy could well produce at the same time Argyll Robertson pupils and the cause of this papillary abnormality is discussed.