Rim-to-Disc Ratio Outperforms Cup-to-Disc Ratio for Glaucoma Prescreening.

ABSTRACT: We present a novel and fully automated fundus image processing technique for glaucoma prescreening based on the rim-to-disc ratio (RDR). The technique accurately segments the optic disc and optic cup and then computes the RDR based on which it is possible to differentiate a normal fundus from a glaucomatous one. The technique performs a further categorization into normal, moderate, or severely glaucomatous classes following the disc-damage-likelihood scale (DDLS). To the best of our knowledge, this is the first engineering attempt at using RDR and DDLS to perform glaucoma severity assessment. The segmentation of the optic disc and cup is based on the active disc, whose parameters are optimized to maximize the local contrast. The optimization is performed efficiently by means of a multiscal

SUBMITTER: Kumar JRH 

PROVIDER: S-EPMC6506519 | biostudies-literature | 2019 May

REPOSITORIES: biostudies-literature