- Diabete-Sight ...www.diabetes-sight.org
- www.revoptom.com/handbook/sect5d.htm
- www.priory.com/med/eye.htm
- Diabetes and its effects on the eyes ...www.stlukeseye.com/diabetic_retinopathy.htm
- Nonproliferative (or Background) diabetic retinopathy is primarily a disease of retinal blood vessels. It is the result of two major processes affecting the retinal blood vessels: vessel closure and abnormal vessel permeability.www.avclinic.com/nonproliferative.htm
