I feel so sorry for you, I have had excellent control with consistent bg levels and Hb1ac at non diabetic level but I still have some leftover neuropathy, thought, cool, at least its improved, I can live with that, then suddenly, bang, wallop just before Christmas last year my eye starts bleeding and I honestly thought that I had managed to arrest this blasted retinopathy.
I had to have more laser treatment at the time, 2 weeks ago had a check up and all seems fine, all I can do is continue as I have done before, who knows, if I didnt have such good control things might be even worse?!
Before I started with low carb, I had wildly fluctuating bg levels, if I got a 7 it was good, mostly higher, I took a lot of medication as well, for various complaints and aches and pains and blood pressure. I also developed kidney problems, it was around that time that someone told me to look into controlling my diabetes with low carb diet.
It has worked wonders for me, I now have normal blood pressure, cholesterol/trigs, no more rheumatic pains, and kidney function improved, eg highest serum creatinine was 169, it has been a steady 70 to 80 for the past 2 years now and apart from Bitter Melon, I dont take any meds at all.
Dont give up, but make sure you get some exercise, plenty of relaxation, eat a diet as healthy as you possibly can, cook your own meals if poss, eat berries, get those antioxidants inside you, try not to overload those poor kidneys with too much medication (obviously dont stop taking meds, always consult with your medics) or any type of chemicals, this includes over the counter remedies, drink nettle leaf tea (add a little freshly squeezed lemon juice to it).
I assume that you will be seeing a kidney specialist, do your research, have all the questions you want answered ready, write them down, eg what about diet, what about your intake of fluids, and so on
I am sending you a big HUG, I have a jolly good idea of how you must be feeling right now, but hopefully things will improve for you again soon.