ALBA
When I was feeling super tired years ago (and not through the after effects of drinking) and trouble with my vision (blurred vision, double vision) I went to the doctors and found it was high blood pressure. I'm not saying yours is. What I'm saying is, you won't know what it is until you get it checked out.
But worrying about it and not doing anything to find out and put it right, you are living in the mental state perfect for the AV to thrive in.