How?

I nearly died the other day when I got a certain letter.

I got a letter the other day about me having to do
Dury serviceStarting from the first of September 2009. I’m crapping myself!!

the thing is, could i do this as i’m blind? I’m not using this as an excuse, just curious. I’m just wondering if there is some kind of visual evidence, could the other durers describe it to me? I’ve got my doctor to write a letter to them,but should i have done this? Apparently if i did not do it, i could get fined, unless i had stated that i could not for some reason.

pleas let me know your thoughts.

Thanks.