Fig. 1
From: Combined Brown syndrome and superior oblique palsy without a trochlear nerve: case report
a Ocular versions demonstrating limitation of elevation and depression on adduction and downgaze of the right eye, and overdepression on adduction of the left eye. During adduction and elevation, widening of the lid fissure is clearly distinct in the right eye compared to the left eye. b The left trochlear nerve (arrows) is well identified, but the right is not observed. c The right superior oblique muscle is hypoplastic (arrow) compared to the left