GROSS ANATOMY

Detailed explanation-1: -The meibomian glands are innervated by sensory, sympathetic, and parasympathetic fibers. Nerve fibers are found in close contact with the basal lamina of the meibomian acini.

Detailed explanation-2: -The parasympathetic nervous system controls constriction of the iris and accommodation of the lens via a pathway with preganglionic motor neurons in the Edinger-Westphal nucleus and postganglionic motor neurons in the ciliary ganglion.

Detailed explanation-3: -The parasympathetic, seventh nerve pathway innervating the eye originates from preganglionic neurons in the superior salivatory nucleus (SSN), which are located in the ventrolateral medulla, slightly dorsolateral to the facial motor nucleus.

Detailed explanation-4: -Though ophthalmic nerve does not belong to autonomic nervous system, this nerve also contains sympathetic nerve fibers that control pupil dilation [46].