Transcranial Doppler (TCD) in Ophthalmology

A Transcranial Doppler (TCD) is a safe, painless, and non-invasive ultrasound test that takes about 25–30 minutes. It uses sound waves to evaluate the blood flow in the major arteries of the brain, including the Ophthalmic Artery and the Circle of Willis—a vital network of vessels that supply blood to the brain and eyes.

Why is TCD Important in Eye Health?

Changes in blood flow to the eyes and brain can increase the risk of:

Ocular stroke (eye stroke)
Vision loss from poor circulation
Neurological complications, such as stroke or transient ischemic attack (TIA)

By measuring the speed and quality of blood flow, TCD helps doctors detect narrowing, blockages, or irregular circulation that may impact both vision and overall brain health.

What Patient Can Expect

Non-invasive: No needles, no injections.
Painless: The test feels similar to a standard ultrasound.
Safe: No radiation is involved.
Efficient: Most exams are completed in about 25–30 minutes.
Expert Review: All TCD results are interpreted by board-certified Radiologists and Neurologists who specialize in vascular and neurological health.

Benefits of TCD in Ophthalmology

Early detection of blood flow abnormalities
Helps identify patients at risk for vision-threatening events
Guides treatment plans to prevent stroke and ocular complications
Provides a clear, real-time assessment of vascular health