Article

Optic Disc Colour Ratio: An Image-Derived Proxy for Subgroup Fairness Analysis in Diabetic Retinopathy Screening

2026-08-13

Abstract excerpt

<title>Abstract</title> <p> Automated diabetic retinopathy (DR) screening achieves specialist-level accuracy on curated benchmarks, yet subgroup performance disparities are not well characterised. We introduce the Optic Disc Colour Ratio (ODCR), an image-derived measure computed from the peripapillary annulus in CIE L <italic>a</italic> b* space and motivated by choroidal pigmentation, though it is not validat...

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Literature Corpus work: a3d24ac7-9b92-5527-930b-68605e0ea688
DOI: 10.21203/rs.3.rs-10133196/v2

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