Introduction The structures of the eye cornea a transparent structure that allows light to enter the eye pupil iris covered by the conjunctiva, a transparent mucous membrane login to view 4 more bullets sclera limbus which is the border of the cornea and sclera medial and lateral canthus Light enters the eye through the cornea and lens which results in an image (inverted and reversed) being formed in the retina the area on the retina with the highest visual acuity is the fovea, which is surrounded by the macula medial (nasal) to the fovea is the optic disc, which login to view 2 more bullets photoreceptors login to view 7 more bullets choroid login to view 1 more bullet ciliary body login to view 7 more bullets Anterior chamber describes the area behind (posterior) to the cornea and in front (anterior) to the iris Posterior chamber describes the area posterior to the iris and anterior chamber Aqueous humor pathway the ciliary body produces aqueous humor into the posterior chamber which flows through the space between the lens and iris into the login to view 3 more bullets Blood supply an arterial source is from the short posterior, long posterior, and anterior ciliary arteries the central retinal artery which supplies the optic nerve venous drainage is from the vorticose veins central retinal veins