BIOL 430 Lecture Notes - Lecture 2: Vitreous Body, Aqueous Humour, Anterior Chamber Of Eyeball
Document Summary
Photoreceptors- scattered throughout the retina except where the optic nerve exits the eye- blind spot or optic disk. Rods: receptors for night vision and peripheral vision. Cones: responsible for color or day vision, 3 types of cones, sensitive to red, blue & green color, absence causes night blindness. Fovea centralis-center of the retina: composed of densely packed cones, provides the sharpest visual acuity, and most acute color vision. The eye is divided into anterior and posterior chambers by the crystalline lens: crystalline lens, held in place behind the pupil, focuses rays of light on the retina. Schlemn : filled with clear water fluid, aqueous humor , the aqueous humor is drained into the blood by a venous sinus called canal of. Light travels through: the cornea, aqueous humor, pupil, lens, vitreous humor, finally to the rods and cones of the retina. Image is transported via the optic nerve to the cerebral cortex.
