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Journal article
Age-Related Regional Changes in Choroidal Vascularity in Healthy Emmetropic Eyes
Translational Vision Science & Technology, Vol.14(5), pp.1-15
2025
PMID: 40310636
Abstract
Purpose: This retrospective cross-sectional study examined regional changes in choroidal vascularity index (CVI) with physiological aging in healthy emmetropes.
Methods: Deep learning methods were used for segmentation and binarization of enhanced depth imaging optical coherence tomography images of the choroid collected from 280 healthy emmetropic subjects (mean spherical equivalent refraction: +0.39 ± 0.38 D), including 83 children (5–12 years), 77 adolescents (13–17 years), and 120 adults (18–41 years). The CVI, calculated as the ratio of luminal versus total choroidal area (in percent), and luminal and stromal choroidal thickness were measured across the 5-mm horizontal macular region centered on the fovea. Linear mixed models were used to examine age-related regional changes in the choroid while controlling for gender and imaging time of day.
Results: The macular CVI reduced significantly from childhood (65% ± 0.5%) and adolescence (63% ± 0.5%) to adulthood (59% ± 0.4%) (P < 0.001). Significant regional variations were observed (P < 0.001) with the CVI increasing from the fovea (61% ± 0.3%) toward the perifovea (64% ± 0.3%) and from the temporal (61.4% ± 0.3%) toward the nasal hemiretina (63% ± 0.3%). The age-related decrease in the CVI was greater in the nasal (−7% ± 0.7%) than the temporal (−6% ± 0.7%) macula (P = 0.014) and was associated with a significant nasal stromal thickening (45 ± 5 µm; P < 0.001) and temporal luminal thinning (−16 ± 6 µm; P = 0.033) from childhood to adulthood.
Conclusions: Physiological aging was associated with a significant region-dependent decline in the CVI driven, primarily by stromal thickening in the nasal and luminal thinning in the temporal macula.
Translational Relevance: These age-related changes in the CVI provide new insights into the physiological morphology of the choroid during aging and may aid clinicians in understanding the spatial and age-associated predilections of certain chorioretinal diseases.
Details
- Title
- Age-Related Regional Changes in Choroidal Vascularity in Healthy Emmetropic Eyes
- Authors
- Ghazal Valizadeh (Corresponding Author) - Queensland University of TechnologyHosein Hoseini-Yazdi - Queensland University of TechnologyScott Read - Queensland University of TechnologyDavid Alonso-Caneiro - University of the Sunshine Coast, Queensland, School of Science, Technology and EngineeringMichael Collins - Queensland University of Technology
- Publication details
- Translational Vision Science & Technology, Vol.14(5), pp.1-15
- Publisher
- Association for Research in Vision and Ophthalmology
- Date published
- 2025
- DOI
- 10.1167/tvst.14.5.3
- ISSN
- 2164-2591
- PMID
- 40310636
- Copyright note
- This work is licensed under a Creative Commons Attribution 4.0 International License
- Organisation Unit
- School of Science, Technology and Engineering
- Language
- English
- Record Identifier
- 991127100702621
- Output Type
- Journal article
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- Domestic collaboration
- Web Of Science research areas
- Ophthalmology
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Source: InCites