exotropia


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exotropia

 [ek″so-tro´pe-ah]
strabismus in which there is permanent deviation of the visual axis of one eye away from that of the other, resulting in diplopia; called also walleye and divergent strabismus. adj., adj exotro´pic.

ex·o·tro·pi·a

(ek'sō-trō'pē-ă),
That type of strabismus in which the visual axes diverge; may be paralytic or concomitant, monocular or alternating, constant or intermittent.
[exo- + G. tropē, turn]

exotropia

(ĕk′sō-trō′pē-ə)
n.
A form of strabismus in which one or both of the eyes deviate outward. Also called walleye.

ex′o·trop′ic (-trŏp′ĭk, -trō′pĭk) adj.

strabismus

Nonparallel positioning or movement of the eyes—usually of the vertical axis—due to decreased binocular muscle coordination with loss of stereoscopic vision and inability to focus simultaneously on a single point.
 
Aetiology
Extraocular muscle defects, neurotoxins, blindness, mechanical defects, unilateral vision obstruction in childhood, various brain disorders or systemic diseases, amblyopia, paralytic shellfish poisoning, botulism, haemangioma near eye, Guillain-Barré syndrome, Apert syndrome, Noonan syndrome, Prader-Willi syndrome, trisomy 18, congenital rubella, incontinentia pigmenti, cerebral palsy, Laurence-Moon-Biedl syndrome, pseudohyperparathyroidism.

exotropia

Divergent or external strabismus, wall eye Ophthalmology A form of strabismus characterized by a permanent deviation in the visual axis of one eye away from the other, causing double vision or diplopia. See Dipolopia.

ex·o·tro·pi·a

(ek'sō-trō'pē-ă)
That type of strabismus in which the visual axes diverge; may be paralytic or concomitant, monocular or alternating, constant or intermittent.
Synonym(s): divergent strabismus, exodeviation (2) , wall-eye.
[exo- + G. tropē, turn]

exotropia

Divergence of the lines of vision of the two eyes. Divergent squint. In exotropia one eye points at the object of regard, the other is directed outwards. In exotropia acquired in adult life there is usually double vision (diplopia). In childhood, the false image may be suppressed and long-term visual acuity may be affected in one eye. See also ESOTROPIA.
References in periodicals archive ?
In a hospital-based study in North India, 2% had intermittent exotropia and 0.8% had paralytic strabismus.
According to this assumption, accommodation drives convergence during the control of distance exotropia for near fixation.
A 14-year-old male patient underwent surgery under local anesthesia following the diagnosis of concomitant exotropia. Two weeks later, a conjunctival cyst was found at the left temporal side, with evidence of conjunctival congestion.
On the last ophthalmologic examination, he had ocular alignment on the level of small angle exotropia and associated hypertropia and occasionally even small angle esotropia at near.
* Remove the cover so both eyes fixate, but you continue looking at the uncovered eye; if it moves back out, you can confirm exotropia (if it moves back in, you can confirm esotropia).
Patients were grouped according to strabismus type: 63 (52.5%) had esotropia; 49 (40.8%) had exotropia; 4 (3.3%) had hypertropia; 3 (2.5%) had both hypertropia and exotropia; and 1 (0.9%) had both hypertropia and esotropia.
Un patron en A se refiere a una endotropia mayor en la mirada arriba o a una exotropia mayor en la mirada abajo.
Freeman RS, Isenberg SJ 1989 The use of part-time occlusion for early onset unilateral exotropia Journal of Pediatric Ophthalmology Strabismus 26 94-96.
Esta afeccion se llama exotropia o estrabismo divergente.***Cuando el cerebro 'apaga' la vision en el ojo afectado a favor de la vision en el ojo que ve bien.
Masculino de nueve anos de edad (Figura 5), con retraso mental, facies aplanada, puente nasal ancho, sinofris, pestanas largas, rizadas y abundantes, exotropia de ojo derecho, polidactilia, hipertricosis, genitales pequenos (Figura 6) y obesidad; cariotipo,46,xy,t(6;9)(p21;q34) (Figura 7) padres con cariotipo normal.
However, if the patient is experiencing esotropia or exotropia, the bead should be moved inward (in case of esotropia) or outward (in case of exotropia) to seek a centration point.