A complex system of nerves and muscles enables the human eye to blink, gaze, and shift focus. The trochlear nerve is one of six cranial nerves that carry electrical impulses from the brain to the eye.

We present signs of superior oblique underaction in a patient with orbital plexiform neuroma with radiological evidence of trochlear displacement as the primary cause of underaction. We postulate ...

A 65-year-old woman was referred to the New England Eye Center with a 6-week history of throbbing right brow pain and 4 weeks of progressive right upper lid ptosis with diplopia when the ptotic lid ...

Dissociated tests of strabismus provide valuable information for diagnosis and monitoring of ocular misalignment in patients with normal retinal correspondence ...