Diabetes sign: Your vision is blurry
Your macula is a small lens in the center in your eye that’s responsible for sharp central vision. But when your glucose levels are too high, fluid can seep into the lens and make it swell up, Fuhrman says.
That swelling can change the shape of the lens, so it’s unable to focus properly. When that happens, your vision can get fuzzy and unclear—even if you’re wearing your glasses or contacts like usual.
