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Year : 2017  |  Volume : 29  |  Issue : 2  |  Page : 112-115

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

Department of Ophthalmology, Little Flower Hospital, Angamaly, Kerala, India

Correspondence Address:
Joseph John
Department of Ophthalmology, Little Flower Hospital, Angamaly - 683 572, Kerala
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Source of Support: None, Conflict of Interest: None

DOI: 10.4103/kjo.kjo_32_17

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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.

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