Q: How does diabetes affect the eyes?

Diabetes can lead to damage in the eye called Diabetic Retinopathy. The retina is your ‘seeing’ part in the back of the eye. High blood sugar levels cause damage to your retinal blood vessels, which in turn causes bleeding, and leakage of exudates in your retina and, in advanced disease, this leads to the formation of abnormal new blood vessels. High blood pressure and high blood fat increase the damage on your retina. Diabetic retinopathy is the most common cause of blindness in the working population in the western world. See - How does diabetes affect the eye