الفهرس 
IntroductionOnly 14 pages are availabe for public view
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Abstract
Intermittent exotropia (IXT) is a common form of childhood exotropia. It is an exodeviation which is controlled by fusional mechanisms. Exotropia is usually preceded by exophoria, and the deviation is mostly noticed when children are tired, ill, inattentive or after long period of near work. Adult patients may manifest exodeviation after taking sedatives or alcohol. The control of intermittent exotropia can be assessed in a variety of ways; one of them is the Newcastle Control Score. Intermittent exotropia has been divided into four groups according to the classification system proposed by Burian. This Classification is based on fusional convergence and divergence and depends on differentiation between distance and near deviations. It is divided into basic intermittent exotropia, true divergence excess, pseudodivergence excess, and convergence insufficiency.