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Ocular deviations in strabismus.

Ocular deviations in strabismus.
Ocular deviations in strabismus.

Strabismus involves both eyes; the left eye is shown here. The direction of the deviation is designated by the prefixes eso-, exo-, hyper-, and hypo-. When the deviation is visible, it is indicated by the suffixes -tropia and -phoria.

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