High blood sugar (glucose) increases the risk of trouble. In fact, diabetes is the leading cause of blindness in adults ages 20 to 74. People with diabetes can get blurry vision when their blood sugar is too high. They’re also at greater risk for three serious eye problems: cataracts, glaucoma, and retinopathy.
When you have diabetes, you’ll need to visit your eye doctor regularly for exams to avoid eye problems.