incomitant strabismus
Pronunciation: in-KOM-ih-tant
A type of strabismus where the deviation varies with direction of gaze, indicating extraocular muscle weakness or restriction.
Full Definition
Incomitant strabismus, also termed paralytic or restrictive strabismus, is characterized by variable deviation measurements depending on the direction of gaze and which eye is fixating. This condition results from weakness, paralysis, or mechanical restriction of one or more extraocular muscles. The deviation typically increases when looking in the direction of action of the affected muscle. In pediatric patients, incomitant strabismus may be congenital or acquired and requires different surgical considerations than comitant forms. Careful measurement in all gaze positions is essential for proper classification and treatment planning.
Usage
Usage note: Always specify whether paralytic or restrictive when the distinction is known.
In Context
- "The patient's incomitant strabismus showed increased deviation when looking toward the paralyzed muscle." — Neurological evaluation report
- "Forced duction testing is often necessary to differentiate restrictive from paralytic incomitant strabismus." — Surgical planning documentation