Diabetes is a disease of the small vessels of the body. And some of the smallest vessels that we have are located in our eyes, our kidneys, our fingers and our toes. We have the ability by looking in the back of the eye to observe the blood vessels which tell us some of the earliest changes in the body relative to diabetes. This is a risk factor. It means that if the eyes are changing their kidneys are changing and the vessels in their fingers and toes are also at risk. So, we can observe this very very early and in the eye itself we can provide some treatment that will forestall any of the changes that might cause vision loss to a person. So, early detection by looking in the eye is extremely important to the diabetic patient.