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Early treatment of strabismus when the person is a baby may reduce the chance of developing amblyopia and depth perception problems. However, a review of randomized controlled trials concluded that the use of corrective glasses to prevent strabismus is not supported by existing research. [49]
Some can be linked convincingly to problems such as convergence or accommodative insufficiency, and the best candidate for treatment efficacy may be therapy for post-traumatic vergence dysfunction, and possibly for accommodative insufficiency, but randomized trials are needed to establish that there is benefit beyond natural recovery."
Convergence excess; this can be due to nerve, muscle, congenital or mechanical anomalies. [ 1 ] Unlike esotropia , fusion is possible and therefore diplopia is uncommon.
She is working as a vice chair on a NEI-funded research trial, which is called Convergence Insufficiency Treatment Trial – Attention & Reading Trial, where she tries to engage optometrists around the country to study the effects and success rate of vision therapy for children with convergence insufficiency. [5]
The cause of congenital fourth nerve palsy is unclear in most cases. It may be neurogenic in origin, due to a dysgenesis of the CN IV nucleus or nerve, but a clinically similar palsy may result from absence or mechanical dysfunction (e.g., abnormal laxity) of the superior oblique tendon.
Exophoria is a form of heterophoria in which there is a tendency of the eyes to deviate outward. [1] During examination, when the eyes are dissociated, the visual axes will appear to diverge away from one another.
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