ArticleKorean journal of ophthalmology : KJO2026
Reproducibility of Optical Coherence Tomography Radiomics after Cataract Surgery: Effects of Media Opacity, Signal Strength, and Region of Interest Selection.
Article in Korean journal of ophthalmology : KJO, 2026. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Not yet cited in PubMed.
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Abstract
purposeTo determine how cataract-related image-quality improvement and region of interest (ROI) definition affect the reproducibility of optical coherence tomography (OCT) radiomics features.
methodsThis retrospective study included 50 eyes from 46 patients who underwent cataract surgery. Preoperative and postoperative OCT images were acquired using a standardized protocol. Radiomics features (n = 93) were extracted from two ROI configurations: retina ROI (Rr; retina only) and full ROI (Rf; retina, choroid, vitreous). Preoperative versus postoperative differences were tested with the Wilcoxon signed-rank test and Cohen's d; repeatability was assessed with the intraclass correlation coefficient (ICC). Agreement between ROIs was evaluated with Wilcoxon statistics, Spearman correlation, the concordance correlation coefficient (CCC) and Bland-Altman plots. The influence of signal strength was analyzed with paired t-tests and Spearman correlation.
resultsPostoperative signal strength significantly improved from 28.24 ± 3.16 to 31.40 ± 3.06 dB (p < 0.001). Significant preoperative/ postoperative changes occurred in 49 / 93 features (52.7%) within Rr and in 81 / 93 (87.1%) within Rf. ICC showed good-to-excellent repeatability in 51.6% of Rr features and 87.1% of Rf features, yet 29.0% of Rr features still demonstrated poor reliability. Across ROI methods, 94.6% of feature pairs differed significantly between Rr and Rf, and no feature achieved CCC ≥0.85. Only two descriptors-first-order statistics 10th percentile and GLDM (gray level dependence matrix) gray level variance-showed no significant change with surgery and minimal dependence on signal strength.
conclusionsRadiomics features in OCT respond variably to media opacity, signal-to-noise ratio, and ROI definition: most are susceptible to these factors, yet a small subset remains stable across them. Limiting analysis to an anatomically precise retina- bounded ROI and enrolling eyes with comparable cataract status and signal-strength scores may therefore improve reproducibility. Implementing these standardizations will help future OCT-radiomics studies identify the most reliable biomarkers for clinical use.
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