WebMD
Font Size

Optical Coherence Tomography

An optical coherence tomography (OCT) scan uses light beams to make detailed images of the inside of the eye. This test can find eye problems such as age-related macular degeneration or glaucoma.

During the test, light beams are focused onto the back of the eye. The test can help find retina or optic nerve problems. Before this test, the pupils may need to be widened using drops, or dilated. OCT takes about 10 to 20 minutes.

ByHealthwise Staff
Primary Medical ReviewerKathleen Romito, MD - Family Medicine
Specialist Medical ReviewerChristopher J. Rudnisky, MD, MPH, FRCSC - Ophthalmology
Last RevisedNovember 12, 2012

WebMD Medical Reference from Healthwise

Last Updated: November 12, 2012
This information is not intended to replace the advice of a doctor. Healthwise disclaims any liability for the decisions you make based on this information.