Found this in my search on microvascular disease:
In its most specific use, the term microvascular disease refers to the damage that occurs to the smallest blood vessels throughout the body in diabetes.
Most at risk from this process, are the small blood vessels of the eye, the kidney and of the sheaths around the nerves. When this happens the function of the nerve is compromised.
An example of this would be the tingling and loss of sensation in the feet and lower legsFound it interesting when it said, "risk ...eye" since dad's been having trouble with the side of his head near the eye for years.