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Hirotaka Tanabe, Yasuki Ito, Yuko Iguchi, Shinsuke Ozawa, Kohei Ishikawa, Hiroko Terasaki; Correlation between Cross-Sectional Shape of Choroidal Vessels and Choroidal Thickness. Invest. Ophthalmol. Vis. Sci. 2011;52(14):2866.
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© ARVO (1962-2015); The Authors (2016-present)
To determine whether a significant correlation exists between the ratio of the vertical/horizontal diameters of the choroidal vessels and the choroidal thickness in normal eyes.
Six clinic-based normal eyes were studied. The macula and retina around the optic disc were examined by spectral-domain optical coherence tomography (OCT) during indocyanine green angiography (ICGA), and choroidal thickness maps were constructed. The vertical and horizontal diameters of the choroidal vessels in the OCT images and horizontal diameter in the ICGA images of the venous phase were measured at 12 locations of various choroidal thicknesses. The horizontal diameter of the choroidal vessels measured in OCT images and corresponding ICG images were compared, and the correlation between the ratio of the vertical/horizontal diameter and choroidal thickness was determined.
The horizontal diameter of the choroidal vessels measured in ICGA and OCT images were not significantly different and were significantly correlated (r=0.66; P<0.05). The ratio of the vertical/horizontal diameter of the choroidal vessels was significantly correlated with the choroidal thickness (r=0.89; P<0.001).
The significant correlation between the ratio of the vertical/horizontal diameter to the choroidal thickness should be considered when the sizes of choroidal vessels are evaluated.
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