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Article: Surgical outcomes for unilateral superior oblique palsy in Chinese population: a retrospective study

TitleSurgical outcomes for unilateral superior oblique palsy in Chinese population: a retrospective study
Authors
Issue Date2015
Citation
International Journal of Ophthalmology, 2015, v. 8 n. 1, p. 107-112 How to Cite?
AbstractAIM: To evaluate the outcome after surgery for unilateral superior oblique (SO) palsy in Chinese. METHODS: The medical records of 39 patients that underwent surgery for unilateral SO palsy between January 2003 and December 2012 at Caritas Medical Centre, Hong Kong, were retrospectively reviewed. All surgeries were performed by a single surgeon. Pre-operative assessments for vertical deviation, cyclo-deviation, and Knapp's classification were obtained to determine the nature and degree of surgical correction. Vertical deviation was measured at 1wk; 1, 6mo and on last follow-up day post-operatively. Cyclo-deviation was measured on last follow-up day post-operatively. RESULTS: During the 10y period, 39 subjects were recruited. The most common etiology was congenital (94.9%). Knapp's Type III (66.7%) and Type I (12.8%) classifications were the most common subtypes. To treat SO palsy, the most common surgical procedures were: isolated inferior oblique (IO) anteriorization (41.0%), isolated IO myectomy (10.3%), and isolated IO recession (10.3%). At 3.5+/-2.1y post-operatively, the vertical deviation was significantly reduced (15.1+/-6.2 PD versus 0.5+/-1.4 PD, P<0.0001) without significant improvement in cyclo-deviation (P=0.5). Initial vertical deviation was correlated with cyclo-torsion (r=0.4, P=0.007). Those with over-correction had greater initial vertical deviation (19.4+/-7.2 PD versus 13.2+/-4.3 PD, P=0.003). After a single operation, 84.6% of subjects achieved a vertical deviation within +/-3 PD. CONCLUSION: The majority of subjects achieved corrected vertical deviation after a single surgery although there was no improvement in cyclo-deviation. Those with over-correction of primary position deviation had greater preoperative vertical deviation and it may be related to simultaneous multiple muscle surgery.
Persistent Identifierhttp://hdl.handle.net/10722/208481
ISSN
2015 Impact Factor: 0.939
PubMed Central ID

 

DC FieldValueLanguage
dc.contributor.authorYau, GSen_US
dc.contributor.authorTam, VTen_US
dc.contributor.authorLee, WYJen_US
dc.contributor.authorChan, TTen_US
dc.contributor.authorYuen, CYen_US
dc.date.accessioned2015-03-11T07:06:17Z-
dc.date.available2015-03-11T07:06:17Z-
dc.date.issued2015en_US
dc.identifier.citationInternational Journal of Ophthalmology, 2015, v. 8 n. 1, p. 107-112en_US
dc.identifier.issn2222-3959en_US
dc.identifier.urihttp://hdl.handle.net/10722/208481-
dc.description.abstractAIM: To evaluate the outcome after surgery for unilateral superior oblique (SO) palsy in Chinese. METHODS: The medical records of 39 patients that underwent surgery for unilateral SO palsy between January 2003 and December 2012 at Caritas Medical Centre, Hong Kong, were retrospectively reviewed. All surgeries were performed by a single surgeon. Pre-operative assessments for vertical deviation, cyclo-deviation, and Knapp's classification were obtained to determine the nature and degree of surgical correction. Vertical deviation was measured at 1wk; 1, 6mo and on last follow-up day post-operatively. Cyclo-deviation was measured on last follow-up day post-operatively. RESULTS: During the 10y period, 39 subjects were recruited. The most common etiology was congenital (94.9%). Knapp's Type III (66.7%) and Type I (12.8%) classifications were the most common subtypes. To treat SO palsy, the most common surgical procedures were: isolated inferior oblique (IO) anteriorization (41.0%), isolated IO myectomy (10.3%), and isolated IO recession (10.3%). At 3.5+/-2.1y post-operatively, the vertical deviation was significantly reduced (15.1+/-6.2 PD versus 0.5+/-1.4 PD, P<0.0001) without significant improvement in cyclo-deviation (P=0.5). Initial vertical deviation was correlated with cyclo-torsion (r=0.4, P=0.007). Those with over-correction had greater initial vertical deviation (19.4+/-7.2 PD versus 13.2+/-4.3 PD, P=0.003). After a single operation, 84.6% of subjects achieved a vertical deviation within +/-3 PD. CONCLUSION: The majority of subjects achieved corrected vertical deviation after a single surgery although there was no improvement in cyclo-deviation. Those with over-correction of primary position deviation had greater preoperative vertical deviation and it may be related to simultaneous multiple muscle surgery.en_US
dc.languageengen_US
dc.relation.ispartofInternational Journal of Ophthalmologyen_US
dc.titleSurgical outcomes for unilateral superior oblique palsy in Chinese population: a retrospective studyen_US
dc.typeArticleen_US
dc.identifier.emailLee, WYJ: jackylee@hku.hken_US
dc.identifier.authorityLee, WYJ=rp01498en_US
dc.identifier.doi10.3980/j.issn.2222-3959.2015.01.20en_US
dc.identifier.pmcid4325252-
dc.identifier.volume8en_US
dc.identifier.issue1en_US
dc.identifier.spage107en_US
dc.identifier.epage112en_US

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