PSY 3108 Lecture Notes - Lecture 15: Eye Strain, Presbyopia, Far-Sightedness

• School: University of Ottawa
• Department: Psychology
• Course: PSY 3108
• Professor: Charles Collin

Document Summary

Wavelength and frequency are the same thing (measure the same thing on the wave), but are used for light/sound respectively. Smallest number of photons humans can see is about 100. Optical infinity (for human vision) is 6m. Choroid"s job is to absorb stray photons (should be black) Dp lenses spread light out before it is focused by the eye. Hyperopia: eye is too long for the lens system. Hard to diagnose because eyes can adapt (and are constantly doing so, but causes eye strain). Depth of field : how wide a field of view we can have where stuff within it is still able to be seen clearly. (range of things you can see sharply). Foviate" the things we are interested in (look directly at them so the light from them falls on our fovea) Rods in darkness maintain a dark current" (things are still happening even when not stimulated, helps keep potential steady)