Characterizing Anterior Segment OCT Angle Landmarks of the Trabecular Meshwork Complex

Ophthalmology
Eric L CrowellLauren S Blieden

Abstract

To identify the presence or absence of 3 identifiable landmarks: trabecular meshwork (TM), Schlemm's canal (SC), and a novel landmark termed the band of extracanalicular limbal lamina (BELL), which is a landmark adjacent to SC visible on anterior segment (AS) OCT. These landmarks also were analyzed pathologically to identify all 3 landmarks. Retrospective review. One eye per participant from prior institutional review board-approved studies in which AS OCT imaging was performed. Horizontal images from 2-dimensional angle analysis scans using a CASIA SS-1000 (Tomey, Nagoya, Japan) AS OCT were evaluated by masked readers. Logistic regression was used to analyze the potential factors of age, gender, race, intraocular pressure, gonioscopy grade, angle location, and history or presence of surgery on the visibility of these structures. Pathologic correlation on 5 previously enucleated eyes also was performed. Presence or absence of angle landmarks-TM, SC, and BELL-using Anterior Chamber Analysis and Interpretation software (ACAI, Houston, TX). Three hundred three angles of 153 horizontal images were included in this study. The mean age was 51.5±16.0 years, with 98 women (64%) and 100 white persons (66%). The outer border of the BELL ...Continue Reading

Citations

Oct 8, 2019·Translational Vision Science & Technology·Brett J KingThomas J Gast
Dec 2, 2020·Journal of Clinical Medicine·Ivano RivaLuciano Quaranta
Apr 4, 2021·Journal of Clinical Medicine·Wungrak ChoiGong Je Seong

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