Aahhhh... great question....glad you asked!
First, legally blind means I have very limited, blurry vision.... unless it's in direct sun light or bright lighting... then, I am completely blind.
So my computer is a massive screen... like a 55 inch tv... and I sit in front of it.
Then, I bump up the text size 400%....
I think someone a mile away could read my screen... if they had X-ray vision and could see through walls.