Clinical utility of anterior segment optical coherence tomography in strabismus surgery: Prospective observational study

Aim: The aim of this study is to evaluate the accuracy of the anterior segment optical coherence tomography (AS-OCT) in measuring the distance from the limbus to the insertion of primary and previously operated horizontal rectus muscles. Materials and Methods: This was prospective observational stud...

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Bibliographic Details
Published inKerala journal of ophthalmology Vol. 29; no. 2; pp. 112 - 115
Main Authors John, Joseph, Joseph, Elizabeth, Meena, C, Sathyan, Sanitha
Format Journal Article
LanguageEnglish
Published Medknow Publications and Media Pvt. Ltd 01.05.2017
Wolters Kluwer Medknow Publications
Subjects
Anterior segment optical coherence tomography
caliper
Care and treatment
Eye
Optical tomography
Strabismus
Surgery
India
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Summary:Aim: The aim of this study is to evaluate the accuracy of the anterior segment optical coherence tomography (AS-OCT) in measuring the distance from the limbus to the insertion of primary and previously operated horizontal rectus muscles. Materials and Methods: This was prospective observational study; we did AS-OCT preoperatively and measured the distance from angle of anterior chamber to muscle insertion using the caliper tool provided in the software. We calculated limbus-insertion distance by adding 1 mm to the angle-insertion distance. We compared this value with intraoperative measurement obtained with surgical caliper. Results: Totally 35 muscles were evaluated, including 12 previously operated muscles. 88.6% of the measurements were within the 1 mm difference considered clinically acceptable. Bland– Altman plots showed good agreement between the two methods. Conclusions: AS-OCT can image the horizontal rectus muscle insertions well and provide good reliability and accuracy in measurement of the limbus-insertion distance.
ISSN:0976-6677
0976-6677
DOI:10.4103/kjo.kjo_32_17