Eye: Anatomical Terms

fluid-filled space betwen the cornea and iris

watery liquid secreted at the ciliary body that fills the anterior and posterior chambers of the eye and provides nourishment for the cornea, iris, and lens

duct in the anterior chamber that carries filtered aqueous humor to the veins and bloodstream

vascular layer beneath the sclera that provides nourishment to the outer portion of the retina

ring of muscle behind the peripheral iris that controls the power of the lens

smooth muscle portion of the ciliary body, which contracts to assist in near-vision capability

epithelial tissue folds on the inner surface of the ciliary body that secrete aqueous humor

joining together; mucous membrane that lines the eyelids and outer surface of the eyeball

transparent, anterior part of the eyeball covering the iris, pupil, and anterior chamber that functions to refract (bend) light to focus a visual image

moveable protective fold that opens and closes, covering the eye

pinpoint depression in the center of the macula lutea that is the site of sharpest vision

interior surface of the eyeball including the retina, optic disk, macula and posterior pole (curvature at the back of the eye)

oil glands surrounding the eyelashes

oil glands located along the rim of the eyelids

colored circle; colored part of the eye located behind the cornea that contracts and dilates to regulate light passing through the pupil

gland located in the upper outer region above the eyeball that secretes tears

tubes that carry tears to the lacrimal sac

structure that collects tears before emptying into the nasolacrimal duct

transparent structure behind the pupil that bends and focuses light rays on the retina

capsule that encloses the lens

central region of the retina responsible for central vision; yellow pigment provides its color

passageway for tears from the lacrimal sac into the nose

exit site of retinal nerve fibers, as well as the entrance point for retinal arteries and the exit point for retinal veins

nerve responsible for carrying impulses for the senses of sight from the retina to the brain

space between the back of the iris and the front of the vitreous filled with aqueous fluid

black circular opening in the center of the iris through which light passes as it enters the eye

innermost layer that perceives and transmits light to the optic nerve; made of cones and rods

cone-shaped cells within the retina that are color sensitive and respond to bright light

rod-shaped cells within the retina that respond to dim light

tough, fibrous, white outer coat extending from the cornea to the optic nerve

mesh-like structure in the anterior chamber that filters the aqueous humor as it flows into the canal of Schlemm

jelly-like mass filling the inner chamber between the lens and retina that gives bulk to the eye