Retinal blood flow refers to the circulation of blood within the retina, the light-sensitive layer at the back of the eye. This flow is crucial for providing oxygen and nutrients to the retinal cells, which are essential for vision. The retinal arteries supply blood, while the retinal veins drain it away, maintaining a balance that supports healthy eye function. Proper retinal blood flow is vital for preventing conditions like diabetic retinopathy and glaucoma, which can lead to vision loss. Factors such as blood pressure, blood sugar levels, and overall cardiovascular health can significantly impact this flow, highlighting the importance of regular eye examinations.