Diabetes is the single largest cause of blindness in Canada. People with diabetes are more likely to develop cataracts at a younger age and are twice as likely to develop glaucoma, but diabetes’ effect on the retina is the main threat to vision.
Called diabetic retinopathy, this effect of diabetes on the eyes is the most common cause of blindness in people under age 65 and the most common cause of new blindness in North America. It is estimated that approximately 2 million individuals in Canada (i.e. almost all people with diagnosed diabetes) have some form of diabetic retinopathy.
See more at: http://www.diabetes.ca