ArticleTranslational vision science & technology2025
Retinal Mid-Peripheral Capillary Free Zones Are Enlarged in Diabetic Patients With No Evidence of Clinical Retinopathy.
Article in Translational vision science & technology, 2025. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 1 paper.
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The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.
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Who cites it
1 citing paper in PubMed.
- Association and Multimodal Model of Retinal Mid-Peripheral Capillary Free Zones with Structural and Functional Parameters in Diabetic Patients Without Clinical Retinopathy.Ophthalmic & physiological optics : the journal of the British College of Ophthalmic Opticians (Optometrists) · 2026Article
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Authors and funding
7 authors.
Funding
Abstract
Purpose: To compare the width of the mid-peripheral capillary free zones (CFZs; periarteriole and perivenule) between diabetics with no diabetic retinopathy (DR) versus controls. Methods: The 20° × 20° optical coherence tomography angiography images of paired arterioles, venules, and their adjacent capillaries within the macular and inferomacular regions of the superficial vascular plexus were obtained from 46 eyes of 28 diabetics with no DR (mean age, 59 years; range, 40-71 years) and 46 eyes of 31 controls (mean age, 59 years; range, 46-78 years). There was no significant difference in age between groups (P = 0.77). The macular and inferomacular images were montaged to generate a wider field of view, followed by the application of a vesselness filter and Otsu thresholding. The mid-peripheral CFZ width was calculated using previously established MATLAB algorithms. Generalized linear mixed models were used to compare the mid-peripheral CFZs between groups, accounting for correlation between eyes. Results: The periarteriole CFZ width was greater in diabetics with no DR (73.3 ± 6.49 µm) compared to controls (67.3 ± 7.08 µm; P < 0.001, Cohen's d = 0.88). Similarly, the perivenule CFZ width was larger in diabetics with no DR (60.8 ± 6.40 µm) compared to controls (54.8 ± 4.58 µm; P < 0.001, Cohens' d = 1.08). Conclusions: Our results demonstrate larger mid-peripheral CFZ width in diabetics with no DR. The mid-peripheral CFZs show promise as a potential novel retinal vascular biomarker for early DR detection. Translational Relevance: Our study shows the potential clinical utility of the mid-peripheral CFZs for early DR detection.
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