There's an important protein called VEGF, which stands for vascular endothelial growth factor. This protein plays a crucial role in the formation of new blood vessels, a process known as angiogenesis. Understanding VEGF and its impact on the body can help us address conditions like abnormal blood vessel growth in the retina. One way to assess VEGF levels is through a blood test. A high VEGF level may indicate a weakness in your blood vessels, leading to the excessive growth of new blood vessels.