Glossary of Terms

Not sure what a word means? Check out the glossary of eye terms.

Acute inflammation

Sudden swelling, redness and pain

Adnexa

Tissues surrounding the globe of the eye

Ametropia

Abnormal vision requiring correction for proper focus

Anterior chamber 

Internal portion of the eye, between the cornea and iris

Aphakic 

Lacking a crystalline lens (focusing lens inside the eye)

Astigmatism

A condition where the cornea is not equally curved in all parts of its surface. It is somewhat oval in shape, causing the visual image to be out of focus (blurred)

Cataract

Opacity of the crystalline lens (focusing lens inside the eye)

Conjunctiva

Membrane that lines the eyelids and the white part of the eye

Cornea

Clear, front covering of the eye

Corneal ulcer

A sore or lesion on the cornea, which left untreated could lead to permanent loss of vision

Endothelial polymegathism

Irregular cell size and shape

Epithelial

Layer of cells on the surface of the cornea

Epithelial microcysts

A small abnormal structure (cyst) in the front surface of the eye

Hyperopia

Farsightedness

Hypoxia

Lack of oxygen

Iritis

Internal inflammation of the colored part of the eye (iris)

Microbial keratitis

An infected corneal ulcer

Monovision

A correction method for presbyopia (loss of reading vision) using contact lenses; one eye is fitted for distance vision, the other for near vision

Myopia

Nearsightedness

Neovascularization

Small blood vessels growing into the cornea

Non-aphakic

Not lacking a crystalline lens

Presbyopia

Condition in which the eye can no longer focus near objects. It commonly develops in people around the age of 40

Subacute inflammation

Gradual swelling, redness and pain

UV (Ultraviolet)

Light from the sun that can be harmful to the eye



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