Retinal blood vessels are tiny tubes in the eye that supply blood to the retina, the light-sensitive layer at the back of the eye. These vessels are crucial for providing oxygen and nutrients, helping the retina function properly and maintain clear vision. They include both arteries, which carry oxygen-rich blood, and veins, which return oxygen-poor blood. The health of retinal blood vessels is important for overall eye health. Conditions like diabetes and hypertension can damage these vessels, leading to problems such as diabetic retinopathy or hypertensive retinopathy. Regular eye exams can help detect issues early, ensuring better outcomes for vision.