The eye is our organ of sight. It has a number of parts which include such as the cornea, iris, pupil, lens, retina, macula, optic nerve, choroid and vitreous. Glaucoma is a common eye problem. It occurs when the aqueous humor inside the eye does not drain properly, which builds a pressure in the eye. This pressure damages the optic nerve leading to vision loss. In several cases, if an injury to the eye neurons occur, glaucoma advances and leads to peripheral vision loss. Glaucoma results in an intrinsic deterioration of the optic nerve.