I have really bad balance and poor eyesight so I would never manage most of these!
Another problem I have with stairs is that I have progressive-lens glasses. They have three different lenses in one – one for long-distance, one for medium-distance and one (the bottom) for close distance (reading). When going down stairs, if I look downwards with my head straight instead of bending my head down, I look down into the reading lenses and I cannot see the steps. It’s just a blur of the same colour and I don’t know where to put my feet.