CAPS 301 Lecture Notes - Lecture 16: Amacrine Cell, Ganglion Cell, Oculomotor Nerve
15 Oct 2018
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Upper visual field is represented on the lower retina and right goes to left. When the muscles of the ciliary body contract and relax, it changes the thickness of the lens. In a relaxed eye, light from distance source is assumed to be parallel. Light rays from a near source (reading) are diverging when they reach the cornea. Come to a focal point behind the retina. Thickening the lens focuses on the retina from behind the retina. Photoreceptor cells - sensory component of the retina. Sensitive to photons of light traveling inward. Are at the very back of the retina (light has to travel to the photoreceptor end past everything else) Choroid layer by the retina is the darkest black that gives you the contrast that you need to pick up the photoreceptors that you need. Detect the visual stimuli and transmit information to bipolar cells. Bipolar cells: intermediate cells which communicates with ganglion cells.
