The only other possibility is that your contact lenses just don't fit your eyeball properly, Nachazel says. If your problem persists, have your eyes and contacts examined to be sure they are the right size and shape for your eye. My son was just diagnosed with Type 1 diabetes and says he can see more clearly since being put on insulin. It can happen to anyone with diabetes, and not just when you're diagnosed. Diabetes is a disease in which the body cannot regulate insulin, a hormone that allows the body to use food for energy.
Many diabetics have high blood sugar levels for a period of time before diabetes is discovered.
When blood sugar is high, that sugar makes its way into the lens of the eye and causes it to swell. If the patient already wears glasses, he may not even notice this, but it may be profound enough to detect. After diagnosis and treatment, blood sugar levels often decrease. The sugar moves out of the lens, reducing the swelling, and many people comment that they are seeing better. This is what happened with your son.