Retinal vascular disease such as retinal vein or artery occlusion. Severe non proliferative retinopathy. Controlling diabetes—by taking medications as prescribed, staying physically active, and maintaining a healthy diet—can prevent or delay vision loss. You have pain in one of your eyes. Diabetic retinopathy develops in people with type 1 or type 2 diabetes. If this swelling occurs in the macula area of central vision, sight may be significantly diminished.  The fluid seeps in between layers of the retina and causes them to separate. Comprehensive dilated eye exams are needed more frequently as diabetic retinopathy becomes more severe.

The lei is conducting and supporting research that seeks better ways to detect, treat, and prevent vision loss in people with diabetes. Diabetes Care. 2014;37suppl:S14. As the disease progresses, some blood vessels that nourish the retina become blocked, over time worsening and depriving several areas of the retina with their blood supply.