The current number of people living with diabetes in Canada is approximately 3.3 million. Type 2 diabetes is the most common form of the disease, accounting for 90% of cases. The prevalence of type 2 diabetes is increasing dramatically with current estimates confidently predicting a doubling of cases by 2025.
What is diabetes?
Diabetes is a chronic disease that prevents your body from making or using insulin, which in turn leads to increased sugar levels in your bloodstream, known as high blood sugar.
How does diabetes affect the eye?
Diabetes and its complications can affect many parts of the eye. Diabetes can cause changes in nearsightedness, farsightedness and premature presbyopia (the inability to focus on close objects). It can result in cataracts, glaucoma, paralysis of the nerves that control the eye muscles or pupil, and decreased corneal sensitivity. Visual symptoms of diabetes include fluctuating or blurring of vision, occasional double vision, loss of visual field, and flashes and floaters within the eyes. Sometimes these early signs of diabetes are first detected in a thorough examination performed by a doctor of optometry. The most serious eye problem associated with diabetes is diabetic retinopathy.