Blurriness is a sign of retinopathy because of how the body interacts with the eye. When your blood sugar goes up, the lenses of your eyes swell, causing you to have blurry vision. This inflammation is only temporary, in most cases, but even if it goes away on its own, that doesn’t solve the bigger problem.
You should also be aware that the center of the retina can also be inflamed, as well as the nerve fibers in the retina. This condition (central retina swelling) is known as macular edema, as the central part of the retina is called the “macula.”