Agreement between intraoperative measurements and optical coherence tomography of the limbus-insertion distance of the extraocular muscles

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• 作者：L. de-Pablo-G&oacute ; mez-de-Liañ ; o^a ; ^{depablo.lucia@gmail.com} ; ^{kinga84@hotmail.com} ; J.I. Ferná ; ndez-Vigo^b ; N. Ventura-Abreu^b ; L. Morales-Ferná ; ndez^b ; J. Garcí ; a-Feij&oacute ; o^b ; R. G&oacute ; mez-de-Liañ ; o^b
• 关键词：Optical coherence tomography ; Extraocular muscles ; Strabismus ; Horizontal rectus muscles insertion ; Limbus-insertion distance
• 刊名：Archivos de la Sociedad Española de Oftalmología (English Edition)
• 出版年：2016
• 出版时间：December 2016
• 年：2016
• 卷：91
• 期：12
• 页码：567-572
• 全文大小：893 K
• 卷排序：91

文摘

To assess the agreement between intraoperative measurements of the limbus-insertion distance of the extraocular muscles with those measured by spectral domain optical coherence tomography.MethodsAn analysis was made of a total of 67 muscles of 21 patients with strabismus. The limbus-insertion distance of the horizontal rectus muscles were measured using pre-operative SD-OCT and intra-operatively in 2 ways: (1) direct, after a conjunctival dissection in patients who underwent surgery, or (2) transconjunctival in patients who were treated with botulinum toxin, or in those who were not going to be operated. The intraclass correlation coefficient and Bland–Altman plots were calculated to determine the concordance between the 2 methods.ResultsThe mean age was 45.9 ± 20.9 years (range 16 to 85), with 52% being women.The percentage of identification by direct intraoperative measurement was 95.6% (22/23), by transconjunctival intraoperative measurement 90.9% (40/44), and by OCT 85% (57/67), with 22 muscles finally being analyzed for the agreement study between direct intraoperative measurement and OCT measurements, and 35 muscles for the agreement between transconjuctival intraoperative measurement and OCT. The intraclass correlation coefficient showed good agreement with OCT and direct intraoperative measurements (0.931; 95% confidence interval (95% CI): 0.839–0.972; P < .001), and with transconjunctival intraoperative measurements (0.889; 95% CI: 0.790–0.942; P < .001).ConclusionsThe SD-OCT is an effective technique to measure the distance from the insertion of the horizontal rectus muscles to the limbus, with a high agreement with intraoperative measurements being demonstrated.