Vascular: Relating to the body's blood vessels (arteries, veins, and capillaries).
Vein: A blood vessel that carries blood to the heart.
Vitrectomy: A procedure in which the gel from the center of the eyeball is removed because it has blood and scar tissue in it that blocks vision. An eye surgeon replaces the clouded gel with a clear fluid.
Scientists in the United States say shift workers getting too little sleep at the wrong time of the day could be increasing their risk of diabetes.
They have found that changes to normal sleep means the body is unable to control sugar levels.