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An exotropia is an outward eye turn that can have a large variety of presentations It can be intermittent, constant, unilateral, alternating and vary in magnitude An exotropia has a variety of causes, some of which can be life threatening If an eyeturn is suspected or there is a family history of an eyeturn a comprehensive eyeexamination An Apattern exotropia is an outward deviation of the visual axes in which there is more divergence of the eyes in midline downgaze than in midline upgaze Lambdapattern is used to describe a subtype of Apattern strabismus In this situation, little change occurs in the amount of ocular deviation from midline upgaze to primary position, but Definition Intermittent exotropia (X (T)) is a strabismus condition with outward drifting of either eye interspersed with periods of good alignment or orthotropia (Fig 771) Monocular eye closure may occur during exodeviation Near stereoacuity is often normal during periods of alignment, though it may deteriorate if the...