Related Experiment Video
Updated: Jul 18, 2026
Doppler Optical Coherence Tomography of Retinal Circulation
Published on: September 18, 2012
Profiles of Choroidal Vortex Vein Drainage System Using Ultra-Widefield OCT Angiography in a Chinese Population
Zhonghua Luo1, Zhenping Li2, Yuefeng Yu3
1State Key Laboratory of Ophthalmology, Zhongshan Ophthalmic Center, Sun Yat-Sen University, Guangdong Provincial Key Laboratory of Ophthalmology and Visual Science, Guangdong Provincial Clinical Research Center for Ocular Diseases, Guangzhou, China.
Purpose:
To develop a normative profile for choroidal vortex vein systems based on ultra-widefield OCT angiography (UWF-OCTA) in a healthy Chinese population.
Design:
A cross-sectional, multicenter study.
Participants:
A total of 515 eyes of 515 Chinese adults (515 healthy eyes) aged ≥20 years were recruited from the Choroidal Vortex Vein System Study.
Methods:
All participants underwent comprehensive ophthalmic examinations. The 2-dimensional and 3-dimensional choroidal parameters of the vortex vein system were measured in each vortex vein drainage quadrant (24 × 20 mm2 scan mode; central, superotemporal [ST], superonasal [SN], inferonasal [IN], and inferotemporal [IT] quadrants) using a UWF-OCTA device. The normative profile examined the choroidal parameters' fifth and 95th percentile values. The associations of ocular and systemic factors with choroidal parameters were investigated using multivariable linear regression to account for the correlation.
Main Outcome Measures:
Choroidal thickness, choroidal vascularity index (CVI), choroidal vascular volume (CVV), and choroidal stromal volume (CSV).
Results:
The fifth and 95th percentile values of the choroidal parameter dataset for the peripheral choroidal vortex vein system were set. The mean values of the peripheral choroidal vortex vein system parameters (choroidal thickness, CVI, CVV, and CSV) decreased with age, with a significant decline after 50 years. An association was observed between an increased axial length elongation and a thinner choroid layer in the macular region and the ST drainage system (all P < 0.01). The CVI was significantly correlated with gender in the ST vortex vein drainage system (coefficient: -1.02, P = 0.04).
Conclusions:
We report a normative choroidal parameter dataset for the peripheral choroidal vortex vein system in a large Chinese cohort. Choroidal vessels and stroma in vortex vein drainage systems decrease with age, more remarkably after the age of 50 years.
Financial Disclosures:
The author(s) have no proprietary or commercial interest in any materials discussed in this article.
More Related Videos
12:22Multimodal Volumetric Retinal Imaging by Oblique Scanning Laser Ophthalmoscopy oSLO and Optical Coherence Tomography OCT
Published on: August 4, 2018
07:18Evaluation of Capillary and Other Vessel Contribution to Macular Perfusion Density Measured with Optical Coherence Tomography Angiography
Published on: February 18, 2022
Related Concept Videos
01:11Overview of Systemic Arteries
Systemic circulation is the part of the cardiovascular system that carries oxygenated blood away from the heart to the body's tissues and returns deoxygenated blood back to the heart.
01:20Imaging Studies for Cardiovascular System II:Types of Echocardiography
Types of Echocardiography
Transthoracic Echocardiography (TTE)
TTE is the most common type of echocardiogram which involves placing a transducer on the patient's chest, emitting sound waves to create heart images. TTE is invaluable for evaluating the heart's size, structure, and motion, making it particularly useful for diagnosing...
01:28Imaging Studies for Cardiovascular System V: CT