PS262 Chapter Notes - Chapter 4: Retina, Lasik, Far-Sightedness
Document Summary
Overview of process: step 1: the environmental stimulus (the tree, step 2: how light reflected from the tree is transformed on the way to the visual receptors, step 3: how the properties of the receptors transform light into electrical signals and determine our sensitivity to light into electrical signals and determine our sensitivity to light and which portion of the reflected light we see, step 4: electrical signals are processed as they travel in neurons. Light reflected from objects in the environment enters the eye through the pupil, focused by the cornea and lens to form sharp images of the objects on the retina: pupil: the opening through which light reflected from objects in the environment enters the eye, cornea: the transparent focusing element of the eye that is the first structure through which light passes as it enters the eye.
