What is Superior Oblique Palsy?
A superior oblique palsy is a weakness of the superior oblique muscle, one of the extra ocular muscles of the eye. A palsy refers to a complete weakening of the muscle while a paresis is a partial weakening. This condition is usually unilateral (one eye) but can be bilateral (both eyes). As the fourth cranial nerve innervates the superior oblique, this is also known as a fourth nerve palsy.
