Like "Hello Ali. When I have had high numbers for a while, I start to see blurry. At night, the stop lights and the lights at the back of the cars ahead of me look like star lights. Doctor told me that it was the sugar coating my corneas. When my numbers came down to a normal level, that starbright effect went away. The blurry went away. What happens is that the capalaries in your eyes start to burst if you keep high BS levels. This can and will lead to blindness. Please have a doctor look at the back of your eyes. Mine takes a picture of the back of my eyes and can show me how the capalaries look. Good luck. "