Paralytic Strabismus

Paralytic strabismus is ocular misalignment due to weakness of an extraocular muscle or its innervation (oculomotor/trochlear/abducens palsy), presenting with diplopia. Causes: microvascular ischemia (diabetes/hypertension), aneurysm, tumor, trauma, myasthenia. Treatment: investigate the cause (especially CN III with pupil involvement - aneurysm); occlusive prism for symptomatic diplopia; strabismus surgery if stable and persistent.

Common Symptoms

Diplopia; ocular misalignment; limited eye movement; by nerve (III/IV/VI); vascular/aneurysm/myasthenia cause

Causes and Pathogenesis

Palsy of an extraocular muscle nerve (III/IV/VI) or muscle imbalance causes misalignment and diplopia.

Treatment

Investigate cause (aneurysm/myasthenia); prism/occlusion for diplopia; strabismus surgery if stable

Preventive Measures

Control vascular risk; investigate CN III pupil-involving palsy.

Department to Visit

It is recommended to visit the Ophthalmology/Strabismus department; an appointment can be booked on this platform before the visit.

Warm reminder: The above information is for health science reference only and cannot replace professional medical diagnosis. If you have related symptoms, please seek medical attention at a regular hospital promptly.