The retinal artery is a vital blood vessel that supplies oxygen and nutrients to the retina, the light-sensitive layer at the back of the eye. It branches off from the ophthalmic artery, which is a major artery that provides blood to the eye and surrounding structures. Proper functioning of the retinal artery is essential for maintaining healthy vision. When the retinal artery becomes blocked or narrowed, it can lead to serious conditions such as retinal artery occlusion. This can result in sudden vision loss or other visual disturbances. Timely medical intervention is crucial to prevent permanent damage to the retina and preserve eyesight.