What is the lining membrane of the cavity of the eyeball connected to the optic nerve which forms the receptor surface for light rays?
Posterior segment of eyeball see better under low light conditions. Posterior segment of eyeball The posterior segment or posterior cavity is the back two-thirds of the eye that includes the anterior hyaloid membrane and all of the optical structures behind it: the vitreous humor, retina, choroid, and optic nerve. The portion of the posterior segment visible during ophthalmoscopy (or fundoscopy) is sometimes referred to as the posterior pole, or fundus. Some ophthalmologists specialize in the treatment and management of posterior segment disorders and diseases. In some animals, the retina contains a reflective layer (the tapetum lucidum) which increases the amount of light each photosensitive
Optic nerve injuries to the optic nerve are from glaucoma, optic neuritis (especially in those younger than 50 years of age), and anterior ischemic optic neuropathy (usually in those older than 50). Glaucoma is a group of diseases involving loss of retinal ganglion cells causing optic neuropathy in a pattern of peripheral vision loss, initially sparing central vision. Glaucoma is associated with increased intraocular pressure that damages the optic nerve as it exits the eyeball. Although glaucoma does eventually damage the optic nerve, it is primarily a disease of eye not of the nerve. Optic neuritis is inflammation of the optic nerve.