cyclodeviation
Pronunciation: SY-klo-dee-vee-AY-shun
A misalignment of the eyes involving rotation around the visual axis, either inward (incyclodeviation) or outward (excyclodeviation).
Full Definition
Cyclodeviation represents a form of ocular misalignment where one or both eyes rotate around their anterior-posterior axis, resulting in tilting of the vertical meridians. This can be congenital or acquired and may be associated with superior oblique palsy, orbital trauma, or congenital cranial dysinnervation disorders. Cyclodeviations can cause diplopia, head tilting, and asthenopic symptoms. Measurement requires specialized techniques such as double Maddox rod testing or fundus photography to assess cyclotorsion.
Usage
Usage note: Specify direction (incyclo- vs excyclo-) and distinguish from cyclotorsion, which refers to eye rotation during measurement.
In Context
- "The patient exhibited a 15-degree excyclodeviation associated with the superior oblique palsy." — Strabismus evaluation report
- "Surgical correction of cyclodeviation may require inferior oblique recession or superior oblique tucking procedures." — Surgical planning note