Hello,
Welcome to the ehealthforum and I am glad to help you out.
Early-stage diabetic retinopathy may not need to be treated, but more advanced retinopathy may require laser treatment or injections of medicine into the eye. Laser treatment may be recommended in more advanced stages of retinopathy if there is a considerable amount of bleeding from the blood vessels in your eye and it is called photocoagulation.
If laser treatment is not possible because retinopathy is too advanced, a type of eye surgery called vitreous surgery may be required. If you had blurred vision from swelling of the central macula before surgery, you may not recover completely normal vision and some loss of peripheral vision may also be there.
It is very difficult to precisely confirm a diagnosis without examination and investigations and the answer is based on the medical information provided. For exact diagnosis, you are requested to consult your doctor. I sincerely hope that helps. Take care.