The Long Ciliary Nerves are a pair of sensory nerves that originate from the trigeminal nerve (specifically, the ophthalmic branch). They primarily provide sensory innervation to the cornea, the sclera, and parts of the iris. These nerves play a crucial role in transmitting pain and touch sensations from the eye to the brain. In addition to sensory functions, the Long Ciliary Nerves also carry autonomic fibers that are involved in the regulation of pupil size. They contribute to the pupillary light reflex, which helps control the amount of light entering the eye, thus protecting the retina and aiding in vision.