Circumpapillary OCT-based multi-sector analysis of retinal layer thickness in patients with glaucoma and high myopia.

Comput Med Imaging Graph

Grupo VARPA, Instituto de Investigación Biomédica de A Coruña (INIBIC), Universidade da Coruña, Xubias de Arriba, 84, 15006 A Coruña, Spain. Electronic address:

Published: December 2024

AI Article Synopsis

  • - Glaucoma is a major cause of irreversible blindness, and diagnosing it involves measuring retinal layer thickness, which can be complicated in patients with elongated, highly myopic eyes due to distortions in OCT scans.
  • - The study presents a new method for accurately segmenting retinal layers, specifically designed for patients with high myopia, enabling better differentiation of glaucoma from simple myopia.
  • - Findings reveal significant reductions in retinal thickness in specific sectors of glaucoma patients with high myopia compared to those with myopia alone, enhancing understanding of the disease's impact.

Article Abstract

Glaucoma is the leading cause of irreversible blindness worldwide. The diagnosis process for glaucoma involves the measurement of the thickness of retinal layers in order to track its degeneration. The elongated shape of highly myopic eyes can hinder this diagnosis process, since it affects the OCT scanning process, producing deformations that can mimic or mask the degeneration caused by glaucoma. In this work, we present the first comprehensive cross-disease analysis that is focused on the anatomical structures most impacted in glaucoma and high myopia patients, facilitating precise differential diagnosis from those solely afflicted by myopia. To achieve this, a fully automatic approach for the retinal layer segmentation was specifically tailored for the accurate measurement of retinal thickness in both highly myopic and emmetropic eyes. To the best of our knowledge, this is the first approach proposed for the analysis of retinal layers in circumpapillary optical coherence tomography images that takes into account the elongation of the eyes in myopia, thus addressing critical diagnostic needs. The results from this study indicate that the temporal superior (mean difference 11.1μm, p<0.05), nasal inferior (13.1μm, p<0.01) and temporal inferior (13.3μm, p<0.01) sectors of the retinal nerve fibre layer show the most significant reduction in retinal thickness in patients of glaucoma and myopia with regards to patients of myopia.

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Source
http://dx.doi.org/10.1016/j.compmedimag.2024.102464DOI Listing

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