Innervation Of Eye Muscle. The trochlear nerve also contributes to the motor innervation of the eye. Most ocular sensory neurons are devoted to the cornea and represent about 15 percent of the total number of neurons of the TG.
Parasympathetic innervation to the eye is supplied by the oculomotor nerve. Organization of the several cranial nerve nuclei that govern eye movements showing their innervation of the extraocular muscles. Although these nerves originate at separate locations in the brainstem they converge in the subarachnoid space and become closely associated in the cavernous sinus superior orbital fissure and posterior orbit.
The muscles responsible for the movement of the eye may be divided into the four recti muscles and the two oblique muscles.
The sensory innervation of the eye is provided by primary sensory neurons mainly of small or medium size clustered in the ophthalmic medial region of the ipsilateral trigeminal ganglion TG. There are four recti muscles. The ciliary processes are attached to the lens via zonular fibers. Through this indirect attachment the ciliary muscle acts on the lens facilitating the accommodation.
