microtropia
Pronunciation: MY-kro-TROH-pee-ah
A small-angle strabismus, typically less than 5 prism diopters, often with central suppression scotoma and eccentric fixation.
Full Definition
Microtropia, also known as microstrabismus, represents a small-angle deviation that may be difficult to detect clinically but has significant functional implications. These patients often develop a central suppression scotoma in the deviating eye and may exhibit eccentric fixation. Microtropia can be primary (congenital) or secondary (following treatment of larger deviations). The condition is associated with reduced stereopsis and may require specialized testing for detection, including neutral density filter testing and visuoscopy for fixation pattern assessment.
Usage
Usage note: Always specify measurement technique used for detection, as standard methods may miss these small deviations.
In Context
- "The microtropia was detected only through careful neutral density filter testing despite normal-appearing eye alignment." — Diagnostic evaluation report
- "Patients with microtropia often demonstrate paradoxical absence of diplopia due to their central suppression scotoma." — Clinical research findings