This is an article about a woman in Halifax who lost her vision due to complications of diabetes. She received services from the CNIB (Canadian National Institute for the Blind), and from The Seeing Eye in Morristown, NJ. (National Post)
Here is another article about a man in Saskatchewan who also became blind from complications of diabetes. He also received services from the CNIB. (The Star Phoenix)
According to the Centers for Disease Control and Prevention's 2011 National Diabetes Fact Sheet:
Diabetes is the leading cause of new cases of blindness among adults aged 20–74 years.
In 2005–2008, 4.2 million (28.5%) people with diabetes aged 40 years or older had diabetic retinopathy, and of these, 655,000 (4.4% of those with diabetes) had advanced diabetic retinopathy that could lead to severe vision loss.
The fact sheet is very long, so scroll down all the way to complications, and you'll find these statistics. (CDC.gov)
That is a high number of people who may need to adjust to visual impairment.
I'm the owner of Family First Braille, the author of this blog, and the editor of Family First Braille Magazine.