Related Experiment Video
Updated: Jun 2, 2026

Doppler Optical Coherence Tomography of Retinal Circulation
Published on: September 18, 2012
[Ocular and orbital blood flow in apparently healthy adults]
Abstract:
Doppler measurements of ocular and orbital blood flow at rest were studied using duplex ultrasonography in 30 apparently healthy adult volunteers. The following linear and calculated Doppler measurements were estimated at rest: blood flow in ophthalmic artery (OA), central retinal artery (CRA), posterior ciliary arteries, central retinal vein and superior ophthalmic vein (SOV). In 10 patients Doppler measurements of blood flow in OA, CRA SOV were estimated 5 times by 2 observers with different level of skills in ultrasonographic ophthalmologic examination. Statistic analysis showed strong correlation of linear and calculated measurements in OA, CRA and venous blood flow velocity. A number of Doppler measurements with the most significant inter- and intraobserver variation were revealed. Measurements with high reproducibility were determined. Thus, a unique technique should be performed in estimation of Doppler measurements of blood flow in ocular and orbital vessels. The velocities in the main arteries (OA, CRA) and veins (SOV) were showed to have significant strong interobserver correlation. The highest reproducibility and accuracy was revealed for maximal systolic velocity in OA and CRA and maximal velocity for cardiac cycle in SOV.
Related Concept Videos
Blood Flow
Glaucoma: Overview
Arteries of the Head and Neck
The internal carotid arteries supply blood to the anterior portion of the cerebrum. They enter the...
Accessory Structures of the Eye
Autoregulation of Blood Flow
Chemical Signaling in Autoregulation
Chemical signaling operates at the precapillary sphincter level, inciting either contraction or relaxation.
Anatomy of Blood Vessels
Arteries
Arteries circulate oxygenated blood from the heart, except the pulmonary artery, which transports deoxygenated blood to the lungs. Large arteries, such as the aorta, have...
