Glaucoma is a disease that affects the Optic Nerve. The Optic Nerve is critical in transmitting the image recorded in the eye to the visual cortex where visual processing occurs. Glaucoma slowly reduces the nerve fiber layer over a long period of time where severe vision loss and blindness can be the end result. Every eye exam screens for glaucoma to detect and start early treatment when necessary. Glaucoma is a chronic condition that can be controlled and managed with eye drops in most instances. Early detection and treatment preserves the nerve fibers and visual function.