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16 terms

eye anatomy

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Aqueous Humor
thin, watery fluid that fills the space between the cornea and the iris
Choroid
provides oxygen and nourishment to the outer layers of the retina
Ciliary Muscles
The small muscles that permit the lens to change its shape in order to focus on near or distant objects.
Cornea
transparent, dome-shaped window covering the front of the eye
Fovea
A tiny pit in the macula that is responsible for sharp vision.
Hyaloid
the transparent membrane enveloping the vitreous humor of the eye and separating it from the retina
Iris
colored part of the eye
Lens
The eye structure behind the iris and pupil that helps focus light on the retina.
Optic Nerve
continuation of the axons of the ganglion cells in the retina
Papilla
the spot there the visual nerve leaves the retina
pupil
contractile aperture in the iris of the eye
retina
the light-sensitive membrane covering the back wall of the eyeball
sclera
whitish fibrous membrane (albuginea) that with the cornea forms the outer covering of the eyeball
visual axis
An imaginary line passing from the midpoint of the visual field to the fovea centralis.
vitrous humor
gel-like substance, helps prevent eyeball from collapsing inward
zonules
ligaments that suspend the lens