PSY-B - Psychology PSY-B 320 Lecture Notes - Lecture 21: Optic Disc, Far-Sightedness, Receptive Field

• School: IUPUI
• Department: PSY-B - Psychology
• Course: PSY-B - Psychology PSY-B 320
• Professor: Cristine Czachowski

Document Summary

The basics: visible light and the structure of the eye: cornea - clear outer covering. Iris (cid:894)the structure that gives you (cid:862)eye color(cid:863)(cid:895) - opens and closes to allow more or less light in. The hole in the iris is called the pupil. Bends to accommodate near and far objects: retina - the light-sensitive surface at the back of the eye where light energy initiates chemical and then neural activity (location of photoreceptors) Region of the retina (known as the optic disc) where axons forming the optic nerve leave the eye and where blood vessels enter and leave. This region has no photoreceptors: fovea. Region at the center of the retina that is specialized for high acuity (densest area of photoreceptors specifically cones) The re(cid:272)epti(cid:448)e field at the (cid:272)e(cid:374)ter of the eye"s (cid:448)isual field. The basics: visible light and the structure of the eye: myopia (nearsightedness) Inability to bring distant objects into clear focus.