Combination of anterior segment optical coherence tomography modalities to improve accuracy of rectus muscle insertion location

Journal of AAPOS : the Official Publication of the American Association for Pediatric Ophthalmology and Strabismus
Michael J VenincasaHilda Capo

Abstract

Anterior segment optical coherence tomography (AS-OCT) is useful for locating the extraocular muscle insertion prior to strabismus surgery; however, its accuracy decreases in reoperations. This masked retrospective study investigated whether a combination of AS-OCT modalities improves accuracy. The distance between the corneoscleral limbus and extraocular muscle insertion was measured with AS-OCT, first using the standard grayscale modality alone and then refined with the color modality. The AS-OCT measurement was considered accurate when within 1.00 mm of the intraoperative caliper measurement. A total of 139 AS-OCT images were analyzed from 74 patients (mean age, 52 years), including 60 medial rectus (19 reoperations), 61 lateral rectus (11 reoperations), 10 superior rectus, and 8 inferior rectus muscles. Compared to grayscale alone, the combination grayscale/color modalities improved AS-OCT accuracy from 77% to 87% (P = 0.03), reflecting an increase from 83% to 94% (P = 0.01) in primary surgeries and from 53% to 60% (P = 0.60) in reoperations.

References

Jul 14, 2011·Biomedical Optics Express·Kostadinka BizhevaTrefford Simpson
Feb 27, 2014·Journal of AAPOS : the Official Publication of the American Association for Pediatric Ophthalmology and Strabismus·Kyung-Ah ParkSei Yeul Oh
Jun 11, 2015·Journal of AAPOS : the Official Publication of the American Association for Pediatric Ophthalmology and Strabismus·Cheryl S NgoStephen P Kraft
Oct 4, 2015·Journal of Cataract and Refractive Surgery·Boris E MalyuginDmitry F Pokrovskiy
May 12, 2016·Journal of AAPOS : the Official Publication of the American Association for Pediatric Ophthalmology and Strabismus·Lucía De-Pablo-Gómez-de-LiañoRosario Gómez-de-Liaño

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