WHAT IS AN OCT?
Optical Coherence Tomography, or OCT, is a non-invasive imaging test that uses light waves to take cross-section pictures of your retina, the light-sensitive tissue lining the back of the eye. It is, effectively, an 'optical ultrasound', imaging reflections from within tissue to provide the cross-sectional images.
Optical Coherence Tomography is attracting interest among the medical community, because it provides tissue morphology imagery at much higher resolution than other imaging methods such as MRI or ultra sound.
WHAT IS OPTICAL COHERENCE TOMOGRAPHY USED TO DETECT?
OCT is useful in diagnosing many eye conditions including:
- Macular hole: a small break in the macula, the part of your eye responsible for detailed, central vision
- Macular pucker: a layer of scar tissue that grows on the surface of the retina, particularly the macula
- Macular edema: swelling or thickening of the macula
- Central serous retinopathy: (sometimes called serous choroidpathy) build-up of fluid under the retina that distorts vision
- Diabetic retinopathy: diabetes damages the tiny blood cells in the retina
- Age-related macular degeneration: alterations and degeneration in the macula that causes loss of central vision
In addition, OCT is often used to evaluate disorders of the optic nerve, which is made up of many nerve fibers and sends signals from your retina to your brain. The OCT exam is helpful in determining changes to the fibers in the optic nerve, such as those caused by glaucoma.