Effect of horizontal strabismus surgery on the astigmatism.

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dc.contributor.authorKitthaweesin, Kitthisaken_US
dc.contributor.authorSinghakul, Sansaneeen_US
dc.date.accessioned2009-05-27T18:40:36Z
dc.date.available2009-05-27T18:40:36Z
dc.date.issued2007-04-10en_US
dc.descriptionChotmaihet Thangphaet.en_US
dc.description.abstractOBJECTIVE: To investigate the effect of horizontal rectus muscle surgery on astigmatism. MATERIAL AND METHOD: A prospective descriptive study was conducted between July 2004 and June 2005, we recruited 16 strabismic patients with bilateral recession or recession of one horizontal muscle or monocular recession and resection for this study at Srinagarind Hospital. The authors measured the patients' best-corrected visual acuity and ocular alignment using the prism cover test and the Modified Krimsky tests, respectively. Auto-refraction was performed on the pre- operative and first post operative day by a technician not apprised of the type and/or amount of surgery. Any differences between the pre-operative and post operative astigmatism were calculated using the x-y coordinate system and the mean value for astigmatism. Descriptive statistics were used to analyze the data. RESULTS: Included were 23 eyes from 16 patients who met the inclusion criteria; 8 females; 8 males; average age 14.75 +/- 11.76 (range, 4-40) years. Seven patients (43.75%) had esotropia and nine (56.25%) exotropia. For all procedures, the respective mean cylinder of the pre- operative and first post-operative day were 0.74 +/- 1.20 D in 67.56 degrees axis and 0.69 +/- 0.86 D in 56.30 degrees axis, in the same direction as the cylinders for each type. There was no statistically significant change in the refractive error between the pre- operative and first postoperative day. CONCLUSION: In contrast to previous studies, astigmatism was not significantly affected by horizontal rectus muscle surgery; however, the present study population was small. Therefore, a larger prospective control trial would be necessary to definitively answer this question.en_US
dc.description.affiliationDepartment of Ophthalmology, Faculty of Medicine, Khon Kaen University, Thailand. Kitthisak@hotmail.comen_US
dc.identifier.citationKitthaweesin K, Singhakul S. Effect of horizontal strabismus surgery on the astigmatism. Journal of the Medical Association of Thailand. 2007 Apr; 90(4): 744-7en_US
dc.identifier.urihttps://imsear.searo.who.int/handle/123456789/39625
dc.language.isoengen_US
dc.source.urihttps://www.mat.or.th/journal/all.phpen_US
dc.subject.meshAdolescenten_US
dc.subject.meshAdulten_US
dc.subject.meshAstigmatism --etiologyen_US
dc.subject.meshChilden_US
dc.subject.meshChild, Preschoolen_US
dc.subject.meshFemaleen_US
dc.subject.meshHumansen_US
dc.subject.meshMaleen_US
dc.subject.meshNystagmus, Pathologic --surgeryen_US
dc.subject.meshOculomotor Muscles --surgeryen_US
dc.subject.meshOphthalmologic Surgical Procedures --adverse effectsen_US
dc.subject.meshProspective Studiesen_US
dc.titleEffect of horizontal strabismus surgery on the astigmatism.en_US
dc.typeJournal Articleen_US
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