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 from the ophthalmic artery, which is a branch of the internal carotid artery. Proper blood flow through the retinal artery is essential for maintaining healthy vision. If the retinal artery becomes blocked or narrowed, it can lead to serious conditions such as retinal artery occlusion, which may result in vision loss. Regular eye examinations can help detect issues related to the retinal artery early, allowing for timely intervention and treatment.