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Glossary of Eye & Vision Conditions

 

Condition

Description

Accommodative Dysfunction

An eye focusing problem that is unrelated to aging changes in the lens of the eye.

See Lazy Eye

A vision condition that causes blurred vision due either to the irregular shape of the cornea, the clear front cover of the eye, or sometimes the curvature of the lens inside the eye.

An inflammation of the eyelids and eyelashes causing red, irritated, itchy eyelids and the formation of dandruff like scales on eyelashes.

A cloudy or opaque area in the normally clear lens of the eye.

The inability to distinguish certain shades of colors or, in more severe cases, see colors at all.

A group of eye and vision-related problems that result from prolonged computer use.

An inflammation or infection of the conjunctiva, the thin transparent layer of tissue that lines the inner surface of the eyelid and covers the white part of the eye.

Convergence Insufficiency

An eye coordination problem in which the eyes have a tendency to drift outward when reading or doing close work.

Corneal Abrasion

A cut or scratch on the cornea, the clear front cover of the eye.

A condition occurring in persons with diabetes, which causes progressive damage to the retina, the light sensitive lining at the backof the eye.

A condition in which there are insufficient tears to lubricate and nourish the eye.

A vision condition in which distant objects are usually seen clearly, but close objects do not come into proper focus.

The shadowy images that are seen moving in your field of vision caused by particles floating in the fluid that fills the inside of the eye.

A group of disorders leading to progressive damage to the optic nerve, and is characterized by loss of nerve tissue resulting in loss of vision.

Hordeolum

See Sty

See Farsightedness

Keratitis

An inflammation or infection of the cornea, the clear front cover of the eye.

An eye disorder causing progressive thinning and bulging of the cornea, the clear front cover of the eye.

The loss or lack of development of clear vision in just one eye. It is not due to eye health problems and eyeglasses or contact lenses can’t fully correct the reduced vision caused by lazy eye.

Learning Related Vision Problems

Vision disorders that interfere with reading and learning.

An eye disease affecting the macula, the center of the light sensitive retina at the back of the eye, causing loss of central vision.

Migraine with Aura

See Ocular Migraine

See Nearsightedness

A vision condition in which you can see close objects clearly, but objects farther away are blurred.

A vision condition in which the eyes make repetitive, uncontrolled movements, often resulting in reduced vision.

Ocular Allergies

The abnormal response of sensitive eyes to contact with allergens and other irritating substances.

An increase in the pressure inside the eye above the range considered normal, without any detectable changes in vision or damage to the structures of the eye.

Ocular Migraine

A type of severe headache accompanied by various visual symptoms.

Pinquecula

An abnormal growth of tissue on the conjunctiva, the clear membrane that covers the white of the eye.

An age-related vision condition in which there is a gradual loss of the eye’s ability to focus on near objects.

Pterygium

An abnormal growth of tissue on the conjuctiva, the clear membrane that covers the white of the eye, and the adjacent cornea, the clear front surface of the eye.

Ptosis

A drooping of the upper eyelid.

Retinal Detachment

A tearing or separation of the retina, the light sensitive lining at the back of the eye, from the underlying tissue.

A group of inherited disorders of the retina, the light sensitive lining at the back of the eye, which cause poor night vision and a progressive loss of side vision.

A rare type of eye cancer occurring in young children that develops in the retina, the light sensitive lining at the back of the eye.

See Crossed Eyes

Sty

An infection of an oil gland in the eyelid.

Subconjunctival Hemorrhage

An accumulation of blood underneath the conjunctiva, the clear membrane covering the white part of the eye.

An inflammation of one or more of the structures that make up the middle layer of the eye called the uvea.

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