You would never imagine, to look at these two kittens, that they had no sight in one eye and partial sight in the other, and have so little sight that in a human, it would be termed ”blindness”. Why? Because they don’t seem to realise it themselves! They are in an unfamiliar playroom in this video, and they are running, jumping, climbing and playing non-stop, with no hesitation at all. And they are having the greatest fun.