People with diabetes can experience day-to-day changes in their vision and/or visual functioning as a result of the disease. Diabetes can cause blood vessels that nourish the retina to develop tiny, abnormal branches that leak. This can interfere with vision and, over time, may severely damage the retina. Laser procedures and surgical treatments can reduce its progression, but regulating blood sugar is the most important step in treating diabetic retinopathy.
Photo credit: National Eye Institute, National Institutes of Health