| Article ID | Journal | Published Year | Pages | File Type |
|---|---|---|---|---|
| 4015624 | Journal of American Association for Pediatric Ophthalmology and Strabismus | 2006 | 4 Pages |
PurposeTo evaluate botulinum toxin injection of the inferior oblique muscle for management of superior oblique (SO) paresis.MethodsWe undertook a prospective case series of injections of the ipsilateral inferior oblique (IO) muscle with 10-20 units of botulinum toxin type A in patients with a SO muscle palsy/paresis of less than 2 years’ duration.ResultsWe enrolled 16 patients (18 eyes) with a mean age of 33.7 years. The median time from onset of symptoms until injection was 6 months. The cause of paresis was trauma for 81% of the patients. The mean hypertropia decreased from 6.4Δ to 1.9Δ at 6 months after treatment. Other clinical measures improved: mean IO overaction from + 1.7 to + 0.6, mean SO underaction from –1.5 to –0.4, mean subjective torsion from 9.3° to 0.4°, and mean head tilt from 8.4° to 1.1°.ConclusionsBotulinum toxin injection to IO muscle reduces the symptoms of SO paresis while patients are waiting for recovery.
