Fourth Nerve Palsy There are ten cranial nerves, each in charge of a different function, like the sense of smell, the optic nerve, and the one that controls most eye movement. The fourth nerve, the trochlear, is in charge of only one eye muscle, called the superior oblique , which moves each eye downward and inward, with some rotational effect also.
The fourth nerve, also called the trochlear nerve is the longest of the cranial nerves, and the one most sensitive to damage fr...Read More
