Exophoria

Exophoria

Exophoria (pronounced: ex-o-for-ee-a) is a form of heterophoria, in which there is a tendency for the eyes to deviate outward. This condition is only noticeable when the person is tired or has been doing a lot of close work.

Etymology

The term "exophoria" comes from the Greek words "exo" meaning "outside" and "phoros" meaning "bearing" or "carrying". It was first used in the late 19th century.

Symptoms

People with exophoria often do not experience any symptoms. However, when symptoms do occur, they may include:

• Double vision or diplopia
• Eye strain
• Headaches
• Difficulty reading or doing close work

Causes

Exophoria can be caused by a number of factors, including:

• Genetics
• Eye muscle imbalance
• Nerve damage
• Brain disorders

Treatment

Treatment for exophoria may include:

• Eye exercises
• Prism glasses
• Vision therapy
• In some cases, surgery

Related Terms

• Esophoria: A condition in which the eyes have a tendency to deviate inward.
• Hyperphoria: A condition in which one eye tends to deviate upward.
• Hypophoria: A condition in which one eye tends to deviate downward.

External links

• Medical encyclopedia article on Exophoria
• Wikipedia's article - Exophoria

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