PSYC 2390 Lecture Notes - Lecture 2: Bifocals, Rhodopsin, Optic Nerve
22 Mar 2016
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Document Summary
Light is a paricle (photon: james clerk maxwell. What aspects of light can we pick up: amplitude. Ex. bright light (large amplitude) or dim light (small amplitude: wavelength. Measured in nanometers (1 billionth of a meter) Focus: involves taking light coming in, bending it, and lipping it upside down, projects image on the back of the reina. Signal the brain that light is there: transducion. Cornea: clear, outer surface of the eye, let"s the light in and focuses it, protects the eye from the outside world. It is hard and tough: contains luid under pressure, bends 70-80% of light, problems: Soluion: glasses, use a laser to carve the outside of the cornea. Iris: the coloured part of the eye, rings of muscles constricts (make smaller) and dilates (makes larger) the pupil, problems. See pink because it is a relecion of the blood vessels. Light is painful, because melanin protects the eyes.
