In This Section      

Eye Structure and Terms

Eye Structure and Terms

diagram of the eye

Choroid: The vascular coat of the eye which supplies the photoreceptors (the visual cells) with oxygen and nutrients.

Retina: A multi-layered group of cells that converts light stimuli into electrical signals that are sent to the brain to make images.

Fovea: The central part of the retina that is responsible for the very best vision.

Macula: The region of the retina including and surrounding the fovea that is responsible for sharp vision that is required for reading and driving.

Optic Nerve: The collection of nerve fibers that carries impulses from the retina to the brain. Sclera The tough outer coat of the eye that protects the delicate inner structures.

eye terminology

Subretinal Hemorrhage: A collection of blood underneath the retina usually due to bleeding from abnormal blood vessels.

Atrophy: Death, degeneration.

Drusen: A collection of yellow material under the retina and the pigment epithelium.

Request an Appointment

Maryland Patients



Traveling for Care?

Whether you're crossing the country or the globe, we make it easy to access world-class care at Johns Hopkins.

Outside of Maryland (toll free)

Request an Appointment
Medical Concierge Services

International Patients

Request an Appointment
Medical Concierge Services

blue suitcase