According to the Centers for Disease Control and Prevention, 34.2 million Americans have diabetes and another 88 million have prediabetes. All told, that's more than 1 in 3 people in the U.S. who have either been diagnosed with diabetes or are dangerously close to it. Diabetes is a big public health concern, but most people don't realize that it impacts more than just our metabolic health. When someone has diabetes, they lose the ability to regulate blood sugar (aka glucose), either because their body can't produce insulin (this is called type 1 diabetes) or because they've become resistant to insulin from chronically high blood sugar levels (this is called type 2 diabetes). In either case, people with diabetes run the risk of having consistently high blood sugar levels, which can cause damage all over the body, including in the eyes.
Read more at: https://www.eatingwell.com/article/7948345/diabetes-eye-health-tips-nutrition/