strabismus

(stră-biz′mŭs)

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[Gr. strabismos, squinting]
A disorder of the eye in which optic axes cannot be directed to the same object. This disorder is present in about 4% of children. The squinting eye always deviates to the same extent when the eyes are carried in different directions: unilateral when the same eye always deviates; alternating when either deviates, the other being fixed; constant when the squint remains permanent; periodic when the eyes are occasionally free from it. Strabismus can result from reduced visual acuity, unequal ocular muscle tone, or an oculomotor nerve lesion.
strabismal (măl)
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, adj. ;
strabismic (mik)
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, adj.
SYN: SEE: heterotropia
SEE: microstrabismus; SEE: squint

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