CINEMA 3 Lecture Notes - Lecture 11: Vitreous Body, Extraocular Muscles, Cell Group
Document Summary
About half of the human cerebral cortex is involved in analyzing the visual world. At the back of the eye is the retina which contains photoreceptors specialized to convert light energy into neural energy. Each eye has in a sense, two overlapping retinas: one for low light levels, one for high light levels. Axons of retinal neurons are bundled into optic nerves. The eye is specialized in the detection, localization and analysis of light. Iris the black dot in the middle of the iris. Glassy, transparent external surface of the eye that covers the pupil and the iris. Inserted into the sclera, not visible from the outside. A membrane that folds back from the inside of the eyelids to the sclera. The opening that allows light to enter the eye and reach the retina. One makes it smaller when it contracts, the other makes it larger.
