Brown syndrome
A restrictive strabismus characterized by limited elevation in adduction due to superior oblique tendon sheath restriction.
Full Definition
Brown syndrome, also known as superior oblique tendon sheath syndrome, presents as an inability to elevate the eye when adducted, simulating inferior oblique palsy. The condition may be congenital due to a tight or inelastic superior oblique tendon sheath, or acquired from inflammation, trauma, or surgery. Patients typically exhibit a positive forced duction test, distinguishing it from true inferior oblique weakness. The restriction may be constant or intermittent, and acquired cases may resolve spontaneously. Treatment options include observation, anti-inflammatory medications for acquired cases, or superior oblique tendon surgery for significant symptoms.
Usage
Usage note: Specify whether congenital or acquired, and note any associated symptoms such as diplopia or head posture.
In Context
- "The patient's Brown syndrome was distinguished from inferior oblique palsy by the positive forced duction test." — Clinical examination report
- "Post-inflammatory Brown syndrome resolved after three months of anti-inflammatory treatment." — Follow-up documentation