Emerging technologies look deeper into the eyes to catch signs of disease

Since the 1960s, the gold standard test for viewing abnormal blood vessels in the eye has been fluorescein angiography. If an eye care professional detects signs of blood vessel abnormalities during a comprehensive dilated eye exam, this test is often the next step. Clinicians and researchers are especially interested in seeing blood vessels nearest to the retina, because those vessels may show early signs of distress in some diseases. But conventional fluorescein angiography isn