The Main character was a Man who lived in UK and over the years couldn't see things far away or in front of him very easily and then all of a sudden became blind
The man wanted to be able to see again.
He thought that as nobody else has been able to see again once they have gone blind, that he wouldn't be able to be cured.
So one day surgeons did an operation to put in what you call a Bionic eye. You have to wear these glasses all the time. These glasses have a sensor that sends video images to his \brain which helps him see.
He can see very well with his glasses on but can not see very well without his glasses so I am guessing that he will have to always where his glasses, although he doesn't now what the future holds...