Why do I need a special dilated eye exam every year if my vision seems perfectly fine?

Yes, a comprehensive dilated eye exam is an essential annual requirement, even if your vision feels 100% perfect. Chronic elevated blood sugar can cause damage to the tiny blood vessels in the back of the eye, a condition known as diabetic retinopathy. In its early stages, this condition has absolutely no symptoms, and it does not affect your everyday vision. By the time you actually notice blurriness or dark spots, the damage is often advanced and much harder to treat. By dilating your pupils, an eye doctor can look deep into the retina to spot microscopic swelling or leaking vessels long before they cause permanent harm, allowing for early, highly effective interventions that protect your long-term sight.