What does an OCT scan really show about your eye health? Optical Coherence Tomography (OCT) is a fast, non-invasive imaging test that reveals microscopic layers of the retina and optic nerve—often detecting eye disease before symptoms appear. Learn how OCT helps diagnose, monitor, and guide treatment for conditions like macular degeneration, diabetic eye disease, and glaucoma.

Flashes of light in your vision can feel unsettling—and sometimes signal serious eye conditions. This guide walks you through what happens during an eye exam for flashes, the tests involved, and why timely evaluation is key to protecting your vision.