title: The role of rectus muscle myectomy in the management of large-angle strabismus for Graves' ophthalmopathy.
abstract: PurposeRetrospective noncomparative case series to investigate the role of rectus muscle myectomy for the treatment of large-angle strabismus in patients with Graves' ophthalmopathy.Patients and methodsData from 47 consecutive patients with Graves' ophthalmopathy who underwent complete myectomy for large-angle strabismus (strabismus greater than 25 prism diopters (PDs)) were collected retrospectively. Pre- and postoperative deviations in primary and reading position were measured in PDs. Postoperative deviation of <5 diopters in primary gaze and functional binocular vision in central 30° field were considered as successful surgical outcomes.ResultsPatients undergoing complete myectomy of the restricted muscles in large-angle strabismus achieved a 78.7% success rate after the first surgery. Reoperation performed on seven patients resulted in 85.7% success rate in reoperation group. The overall success rate was 91.5%. The mean efficacy of the isolated rectus muscle myectomy was 34.3±7.7 PDs.ConclusionsThe complete rectus muscle myectomy technique is effective and predictable in the treatment of large-angle strabismus in patients with Graves' ophthalmopathy.
authors.affiliation: Department of Ophthalmology, National Taiwan University Hospital, Taipei, Taiwan.|National Taiwan University, College of Medicine, Taipei, Taiwan.
authors.forename: S L
authors.initials: SL
authors.lastname: Liao
authors.affiliation: Department of Ophthalmology, National Taiwan University Hospital, Taipei, Taiwan.
authors.forename: Y-H
authors.initials: YH
authors.lastname: Wei
authors.affiliation: Department of Ophthalmology, Mackay Memorial Hospital, Taipei, Taiwan.
authors.forename: A Y-C
authors.initials: AY
authors.lastname: Chuang
mesh_terms: D000328:Adult; D000368:Aged; D000369:Aged, 80 and over; D005133:Eye Movements / Q000502:physiology*; D005260:Female; D049970:Graves Ophthalmopathy / Q000150:complications* / Q000175:diagnosis / Q000503:physiopathology / Q000601:surgery; D006801:Humans; D008297:Male; D008875:Middle Aged; D009801:Oculomotor Muscles / Q000000981:diagnostic imaging / Q000503:physiopathology / Q000601:surgery*; D013508:Ophthalmologic Surgical Procedures / Q000379:methods*; D012189:Retrospective Studies; D012720:Severity of Illness Index; D013285:Strabismus / Q000209:etiology / Q000503:physiopathology / Q000601:surgery*; D013997:Time Factors; D014057:Tomography, X-Ray Computed; D016896:Treatment Outcome; D015348:Vision, Binocular / Q000502:physiology*