comitant strabismus.
strabismus
deviation of the eye that the patient cannot overcome; the visual axes assume a position relative to each other different from that required by the physiological conditions. Called also squint.
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Basic types of strabismus. By permission from Guyton R, Hall JE, Textbook of Medical Physiology, Saunders, 2000
comitant strabismus
extraocular muscles are not paralyzed and the degree of deviation is the same in all directions.
congenital strabismus
medial strabismus is seen in Siamese cats. See convergent strabismus (below).
convergent strabismus
that in which the visual axes converge; esotropia, or cross-eye. A frequent finding in Siamese cats, related to an anomaly of neuronal pathways between the retina and lateral geniculate nucleus in which more neurons project contralaterally rather than ipsilaterally as in other cats.
divergent strabismus
that in which the visual axes diverge; called also exotropia and walleye.
inherited strabismus
see inherited exophthalmos.
noncomitant strabismus
deviation due to paralysis of one or more muscles.
traumatic strabismus
a complication of traumatic prolapse of the eye, due to rupture of extraocular muscles.
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