Question

Squinting (strabismus) may result from

A. Poor vision in one eye in childhood.

B. A refractive error in childhood.

C. Central suppression of vision in one eye in childhood.

D. Damage to the cerebellum.

E. Damage to the internal capsule.

Answer 1

A. True Poor vision in one eye impairs fixation of the eye concerned.

B. True A refractive error impairs vision in the eye concerned to give poor fixation.

C. False Suppression of vision in one eye is a consequence, not a cause, of squint.

D. False Cerebellar damage may cause involuntary oscillatory movements (nystagmus) but not squinting.

E. True Internal capsular damage may cause a paralytic squint due to damage to the oculomotor tracts.