Retinal vein occlusion (RVO) is the obstruction of blood flow in the venous (vascular) system of the retina inside the eye due to the blockage of a vein.
A retinal tear is the tearing of the retina inside the eye. The retina is a thin layer that detects light inside the eye and sends it to the optic nerve.
Age-related macular degeneration is a degenerative condition that typically occurs after the age of 50 and affects the macula region at the center of the retina.