bilateral strabismus

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(stra-biz'mus) [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 (mal), adjective; strabismic (mik), adjective Synonym: heterotropia See: microstrabismus; squint

accommodative strabismus

Strabismus due to disorder of ocular accommodation. Synonym: bilateral strabismus

alternating strabismus

Strabismus affecting either eye alternately.

bilateral strabismus

Accommodative strabismus.

concomitant strabismus

Strabismus in which both eyes move freely but retain an unnatural relationship to each other.

convergent strabismus

Strabismus in which the deviating eye turns inward.

divergent strabismus

Strabismus in which the deviating eye turns outward.

horizontal strabismus

Strabismus in which the deviation of the visual axis is in the horizontal plane.

intermittent strabismus

Strabismus recurring at intervals.

monocular strabismus

Strabismus in which the same eye habitually deviates.

monolateral strabismus

Strabismus with the squinting eye always the same.

nonconcomitant strabismus

Strabismus of an eye that varies in degree with the change in direction in which the eye moves.

paralytic strabismus

Strabismus due to paralysis of one of the extraocular muscles.

spastic strabismus

Strabismus due to contraction of an ocular muscle.

vertical strabismus

Strabismus in which the eye turns upward.
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