incomitance

incomitance

Condition in which the manifest or latent angle of deviation of the lines of sight of the two eyes differs according to which eye is fixating or in which direction the eyes are looking. This condition is usually attributed to a paresis or paralysis of one or more of the extraocular muscles. Syn. nonconcomitance. See anisophoria; concomitance; incomitant strabismus; paralytic strabismus.
References in periodicals archive ?
Unlike the Faden technique, the T reduction with Y-split recession is approximately constant throughout the oculomotor range resulting in less incomitance than that with Faden technique [17-19].
None of the patients had limitation of ocular movement and any lateral incomitance.
In the same study, the most common causes of incomitance were identified as A-V pattern, fourth nerve palsy, asymmetric surgery, Duane retraction syndrome, and Brown syndrome.
In any case, a change in image separation when looking in different directions is a sign of incomitance, and is much more likely to occur in recent onset neurogenic conditions, or those caused by a mechanical restriction to the movement of the eye.
Y-splitting surgery has also been reported to result in less incomitance than posterior fixation surgery [4, 7].
(1) Due to the torsional component and the frequency of incomitance, medical treatment using prisms is generally not tolerated by SOP patients.
The amount of transposition is determined by the degree of incomitance. It has been shown that horizontal recti transposition collapses the pattern but results in increased objective torsion.