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Cornea

The transparent front part of the eye that covers the iris, pupil, and anterior chamber, and provides most of the eye's optical power.

Pupil

The opening in the center of the iris that allows light to enter the eye.

Aqueous Humor

The clear fluid that fills the space between the cornea and the lens, providing nutrients to the eye and maintaining intraocular pressure.

Iris

The colored part of the eye, which controls the size of the pupil and thus the amount of light that enters.

Lens

A transparent structure behind the iris that focuses light onto the retina.

Vitreous Body

The gel-like substance that fills the space between the lens and the retina, helping maintain the eye's shape.

Retina

The light-sensitive layer of tissue at the back of the eye that converts light into neural signals.

Sclera

The white outer coating of the eyeball, providing structure and protection.

Optic Nerve

The nerve that transmits visual information from the retina to the brain.

Conjunctiva

The thin, transparent membrane covering the front of the eye and lining the eyelids.

Dry Eye

A condition where the eyes do not produce enough tears or the right quality of tears to keep the eyes wet.

Keratoconus

A progressive eye disease in which the cornea becomes thin and develops a cone-like bulge, causing visual distortion.

Lacrimal Fluid

Fluid produced by the lacrimal glands that contains salts and proteins, essential for maintaining eye health.

Tear Film

A thin layer of tears that covers the surface of the eye, consisting of lipid, aqueous, and mucus layers.

Ciliary Muscles

Muscles that control the shape of the lens and thus affect the eye's focus.

Fovea

The small pit in the retina responsible for sharp central vision.

Visual Axis

The line of sight that extends from an object to the eye's retina.

Blind Spot

The area of the retina without photoreceptor cells, where the optic nerve exits the eye.

Sclero-Corneal Coat

The outer fibrous layer of the eye, comprising the sclera and cornea.