I have just been diagnosed with type 2 and my HbA1c was 80. My vision is blurry and I am worried about permanent damage to my sight. Will the blurriness go once my blood sugar level goes down? I have started a very low calorie diet (low carb) to try to reduce my weight quickly and hope that works. How long does it usually take to reach normal levels when taking Metformin ? My Dr didn't really answer my questions. Thanks in advance for any information/advice.