The retina is the light sensitive tissue lining the inside back wall of the eyeball. This tissue contains photoreceptors and is responsible for converting light into visual signals. Retinal photography uses a specialized camera to capture a colorful picture of the inside of the eye, typically without the need for pupil dilation. This retinal image helps to document ocular structures such as the optic nerve, macula, retinal arteries and veins.

Optical coherence tomography (OCT) uses light waves to capture a 3D image of the back of the eye. This technology allows the doctor to see a cross-sectional image of the individual layers of the retina. This non-invasive test plays a major role in early detection and monitoring of ocular conditions such as glaucoma, age-related macular degeneration (AMD), diabetic eye disease, and many more.