heterophoria

It is especially important when a person has heterophoria.

Instrument used to measure the associated heterophoria (or compensating prism).

In severe cases, when the heterophoria is not overcome by fusional vergence, sign and symptoms appear.

The cross-cover test, or alternating cover test is usually employed to detect heterophoria.

When the fusional vergence system can no longer hold back heterophoria, the phoria manifests.

When fusional reserve is used to compensate for heterophoria, it is known as compensating vergence.

This is called decompensated heterophoria.

Exophoria is a form of heterophoria in which there is a tendency of the eyes to deviate outward.

With heterophoria, when the cover is moved to the other eye, the eye that has just been uncovered can be seen to move from a deviated point.

In order to understand how heterophoria occurs, we must understand of how the eye can maintain proper fixation with non aligned visual axis.

See Disparometer; associated heterophoria; uncompensated heterophoria.

Sometimes, asthenopia can be due to specific visual problems, for example, uncorrected refraction errors or binocular vision problems such as accommodative insufficiency or heterophoria.

QUESTION: The conditions blepharitis, ectropion, amblyo phobia and heterophoria would all result in what condition?

Strabismus can present as manifest (heterotropia) or latent (heterophoria) varieties, and can be either a disorder of the brain in coordinating the eyes, or of the power or direction of motion of one or more of the relevant muscles moving the eye.