Controls amount of light entering the eye
Colored portion of the eye
Tears flow across conjunctival surfaces to cleanse and to this
Membrane that protects & maintains eyeball's shape
Thin mucous membrane lines anterior of eye, exposed to air
Produces tears
Located in bony orbits within the facial bones
Tears drain from the eyes through this
Contains the highest concentration of cones
Instrument used to perform examination of eye structures
The pupil's diameter is regulated by contracting & relaxing of this
Located in the center of the iris
Transparent, nonvascular layer covering the iris
Examination of external & internal structures of the eye
Protects the eyeballs from foreign matter and insects
Anterior & Posterior cavities separated by this
Part of retina insensitive to light
The White of the Eyes
Contains extensive capillaries that provide blood supply & nutrients
Responsible for dim lights & peripheral vision
Colorless biconvex structure aids in focusing images
Nerve cells along the optic nerve (Two words)
Iris may be hazel, brown, or this color
When images focus on fovea centralis resulting in sharpest images.. called what?
Nerve impulses transmitted via this to the brain
