Blood vessels grow out of control in this environmental scanning electron microscopy image of a diseased retina. In diabetic retinopathy and retinopathy of prematurity, blood vessels grow abnormally in the back of the eye and leak blood, causing blindness. At least 4.1 million Americans with diabetes are affected.
Research has shown that inexpensive omega-3 supplements may ease retinopathy. A new study of mice published Feb. 9 in the journal Science Translational Medicine finds that the supplements do so by reducing runaway blood vessel growth. Clinical trials in humans are underway.