“A compound found in marijuana won’t make you high but it may help keep your eyes healthy if you’re a diabetic, researchers say. Early studies indicate cannabidiol works as a consummate multi-tasker to protect the eye from growing a plethora of leaky blood vessels, the hallmark of diabetic retinopathy, says Dr. Gregory I. Liou, molecular biologist at the Medical College of Georgia.”
http://www.sciencedaily.com/releases/2006/02/060227184647.htm