For the similar condition, where the eyes deviate inward (rather than outward), see esotropia.
Medical condition
Exotropia
Other names
Divergent squint, wall eyes
David Prowse displaying exotropia of both eyes
Specialty
Ophthalmology
Exotropia is a form of strabismus where the eyes are deviated outward. It is the opposite of esotropia and usually involves more severe axis deviation than exophoria. People with exotropia often experience crossed diplopia. Intermittent exotropia is a fairly common condition. "Sensory exotropia" occurs in the presence of poor vision in one eye. Infantile exotropia (sometimes called "congenital exotropia") is seen during the first year of life, and is less common than "essential exotropia" which usually becomes apparent several years later.
The brain's ability to see three-dimensional objects depends on proper alignment of the eyes. When both eyes are properly aligned and aimed at the same target, the visual portion of the brain fuses the two forms from the two eyes into a single image. When one eye turns inward, outward, upward, or downward, two different pictures are sent to the brain. Thus, the brain can no longer fuse the two images coming from the two eyes. This causes loss of depth perception and binocular vision. The term is from Greek exo meaning "outward" and trope meaning "a turning".[1]
^"Exotropia Origin". dictionary.com. Retrieved 21 July 2015.
exophoria. People with exotropia often experience crossed diplopia. Intermittent exotropia is a fairly common condition. "Sensory exotropia" occurs in the presence...
the light lands on the cornea, the examiner can detect if there is an exotropia (abnormal eye is turned out), esotropia (abnormal eye is turned in), hypertropia...
The axis deviation in exophoria is usually mild compared with that of exotropia. Exophoria can be caused by several factors, which include: Refractive...
affected individual a "cross-eyed" appearance. It is the opposite of exotropia and usually involves more severe axis deviation than esophoria. Esotropia...
The Worth Four Light Test, also known as the Worth's four dot test or W4LT, is a clinical test mainly used for assessing a patient's degree of binocular...
anisometropia may be one of the risk factors for developing consecutive exotropia and poor binocular function may be a risk factor for anisometropia to...
of the two eyes relative to each other, either esotropia (inward) or exotropia (outward). In such a case while the fovea of one eye is directed at the...
meaning the images are uncrossed. In a patient with an unsuppressed exotropia, the patient will see two lights with one line through each light. The...
from in to out, the person has exotropia. If it moved from out to in, the person has esotropia. People with exotropia or esotropia are wall-eyed or cross-eyed...
component of childhood strabismus, particularly infantile esotropia and exotropia. Because true hyperinnervation is not usually present, this phenomenon...
"-tropia". Esotropias measuring more than 15 prism diopters (PD) and exotropias more than 20 PD that have not responded to refractive correction can be...
Field expansion for homonymous hemianopia by optically induced peripheral exotropia. Optom Vis Sci 2000; 77:453-464. Prism Glasses Expand The View For Patients...
Esotropia — the tendency for eyes to become cross-eyed (H50.1, H50.3) Exotropia — the tendency for eyes to look outward H52 Disorders of refraction and...
with or without esotropia Type II: Limited adduction with or without exotropia Type III: Limitation of both abduction and adduction and any form of horizontal...
line to the left and white light to the right, they are said to have exotropia or exophoria (crossed diplopia) in which base in(BI) prisms of increasing...
ALT Alternating ALT ET/SOT Alternating esotropia ALT XT/XOT Alternating exotropia ARC Anomalous retinal correspondence A/V Arteriole–venue ratio BIO Binocular...
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