Blind cat playing

This is Bohème, and is a blind cat, I raised him since August 2012, he was a sick cat, despite that surpassed the odds, survived to his sickness and grow up to a beautiful cat.
Sometimes I see him playing with thing that are on the floor and despite being a blind cat has a good sense of direction and accurate senses.
Look at him playing with a pen and my cap, apparently he is having fun!