Optical coherence tomography

Just as ultrasound analyzes the retina through the use of sound waves bounced off the retina, optical coherence tomography (OCT) analyzes the retina by bouncing light waves off of the retina—except that it offers a hundred times greater detail than ultrasound. During this procedure, a scanning light beam travels across the surface of the retina while a computer records the image of the retina with microscopic detail. In many patients, OCT is extremely important when deciding whether or not medical or surgical treatments will be beneficial.