AP Psychology - Eye Quiz

Amplitude

Intensity of Light

Blind Spot

area where optic nerve connects to retina; no photoreceptors

Cones

produce color sensations; need higher levels of light to function

Cornea

helps the eye focus light as it comes through the pupil - clear

Fovea

area on back of retina that contains only cones; sharpest area of vision

Iris

The colored part of the eye. The color is dependent melatonin levels.

Lens

adjusts to the distance of objects by changing its thickness - Focusing the image on the retina

Optic Nerve

sends neural messages to the visual cortex (occipital lobe)

Photoreceptors

cells within the retina that are specialized for the transduction of light into neural impulses

Transduction

in vision, the process of changing a light wave into a neural impulse

Pupil

the opening through which light enters; it changes sizes with light and with emotion

Retina

The sensitive surface that acts like the film in a camera - has millions of photoreceptors which send messages to the brain.

Rods

produce black and white sensations; work in low light

Sclera

outer covering of the eye "whites of their eyes"

Wavelength

Type of Light