I know this feeling... I just fell again last fall at my son's new townhouse!
Mortifiying since his old pal from High School was there...I tripped over a stupid
step that was not obvious...in the middle of the sidewalk. I too was carrying grocery bags. I have TRI-focals...and the step was in my Blur Zone.
Falling in a street...that must have been horrible!

I know that zone well.

I hope you are okay, Bob.. I too had a road rash.

One must be very viligiant these days... my downfall (pun intended) is daydreaming...I am always thinking about stuff...work, answers to this board, etc. I am very careful now around stairs--we have alot of them here at home.
I do not look around, or think about ANYTHING but my feet on stairs. If someone talks to me, I am a not "there" until I am done.