Those eye charts I downloaded from here: http://www.i-see.org/eyecharts.html.
Click on the "PDF" link under the Classic Eye Chart. It comes out to 3 pages which I just taped together one on top of another and then taped on a wall. Then you mark a link 20ft from the chart and that's where you take your readings from. There is a number next to each line of text on both sides, on the left it is in feet. If the best you can do is read the line marked 40ft from 20ft away you are 20/40 vision, and so on.
So how weak did you feel near the end of your 29 day fast? Would you be able to move around maybe drive somewhere and go shopping?
That's the only thing I am really concerned about because I have to work while fasting so I dont know how long I can last before I am too weak to drive to work and sit at my desk for the day...
And I already know what you mean by using sense of smell as taste... wow how nice things can smell now! (Well, and how awful too....)