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We understand by squint or strabismus that condition of the eyes in which the visual axis of one deviates from the visual axis of the other, when in a position of fixation upon an object.
The normal position of the visual axis is parallel when the eyes are fixed upon a point at an infinite distance, and more or less convergent when fixed upon any object nearer than infinity.
Paralysis of any individual or group of the extrinsic muscles of the eye would give rise to a disturbance of this adjustment of the visual axes and cause paralytic strabismus.
In this, the movements of the affected eye would be more or less restricted in those directions controlled by paralyzed muscle, and there would be a corresponding deviation of the axis of the eye; while in movements in other directions it would follow the sound eye and the axes would be
WILDER WH. SQUINT AND ITS TREATMENT.Read before the Meeting of the Illinois State Medical Society, May, 1893.. JAMA. 1893;XX(24):658–660. doi:10.1001/jama.1893.12420510008001b
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