the brain is kind of ok, we think. but I'm so TIRED at the end of every day. physically and mentally. My body hurts and my head aches

sorry, it's been a hard weekend. In hospital, a small room with a few people, I had no idea how devastating the field cut would be to my everyday vision. It just feels like I don't have my lenses in when I do. Some days, I truly believe I haven't put them in and go up to do so. Those days I cry. A lot.
Faces and crowds are hard. People are hard. All I've done for two days is sit on my butt at a swim meet. How is my body so completely bone-tired? I know why my sciatica is hell, but where does the tiredness come from?
And please, sir, can i see a little more clearly? I play words with friends on facebook. I can't count how many times I think I've got a great word and then realize I didn't see a whole bunch of letters on the left and it doesn't fit at all.....
I can't drive my kids to their sports, I can't watch their sports, I can't work the score tables and i can't do the volunteer jobs I have. my defecits are minor, but have very accurately wiped out my entire life (figure skating and pottery are gone too).
I'll take the brie, please.