PARINAUD'S SYNDROME A CASE REPORT

Gaze palsies are a group of midbrain affecting neurological disorders characterized by inability to move the eyes in horizontal or vertical directions or rarely combination of both. Associated with movement disorder are lid and pupil dysfunctions. These lesions have localizing values. Parinaud’s syndrome ; named after Henri Parinaud a French neuro- ophthalmologist is a lesion involving dorsal midbrain. The mesencephalic reticular formation that includes the rostral interstitial nucleus of medial longitudinal (riMLF) fasciculus and its connection with the interstitial Nuclei of Cajal and Darkschewitsch and the posterior commisure are involved. The riMLF is located dorsomedial to the rostral end of the red nucleus, rostral to the oculomotor nucleus and ventral to the periaqueductal grey matter. This syndrome is characterised by (1) impaired voluntary vertical eye movements, (2) light-near dissociation of the pupillary response (pseudo-Argyll Robertson pupils), (3) convergence nystagmus on attempted upward gaze, (4) lid retraction (Collier sign) and (5) skew deviation. Here we present a case of Parinaud’s syndrome in post-operative intensive care unit set up.