PSYC310 Chapter Notes - Chapter 2: Refractive Error, Aqueous Humour, Emmetropia
3 Mar 2017
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Chapter 2: the first steps in vision: from light to neural signals. Wave: oscillation that travels through a medium by transferring energy from one particle or point to another without causing any permanent displacement of the medium. Photon: quantum of visible light or other form of electromagnetic all radiation demonstrating both particle and wave properties. Visible light wavelength between 400 and 700 nanometers (violet to red) Absorb: take up something light/noise/energy and not transmit it at. Scatter: to disperse something light in an irregular fashion. Reflect: to redirect something that strikes a surface light/sound/heat usually back towards its pint of origin: light with dark surfaces, light off of a light surface. Transmit: to carry something (light) from one place to another. Cornea: first tissue light encounters; transparent (cid:498)window(cid:499: allows light to pass through without interruption. Aqueous humor: watery fluid behind cornea; supplies oxygen and nutrients to, and removes waste from, the cornea and lens.
