Abstract
Purpose :
Approximately 95% of the ocular blood flow is directed to the uveal system, of which approximately 70% is circulating into the choroidal vessels. We visualize these vessels and measure their surface with speckle-noise freed 3D optical coherence tomography.
Methods :
3DOCT volumes were obtained from 20 healthy eyes (10 females) with Spectralis OCT (Heidelberg Engineering, Heidelberg, Germany). The scan pattern was raster lines 4.5x3.0x1.9 mm, 261 B-Scans, with EDI-mode on, averaged for 20 scans using the automatic averaging and tracking tool. The OCT volumes were freed from speckle-noise with a prototype denoising analysis software. Choroidal vessels were segmented and their total surface area was calculated.
Results :
20 eyes of healthy females were investigated. The mean central choroidal vessel surface area was 0.18444301 mm2 (range 0.154483253 mm2 - 0.215696694 mm2; SD 0.01882505). Three dimensional models of the choroidal vessels were reconstructed.
Conclusions :
Speckle-noise free chororoidal angiography and surface measurement may be a potential complementary 3D visualization technology for choroidal vessels.
This is an abstract that was submitted for the 2016 ARVO Annual Meeting, held in Seattle, Wash., May 1-5, 2016.