Cure the blindness

A little blind boy goes up to his mom and says, "Mummy, mummy, when will I be able to see?"
His mom replies "I'll tell you what, I'll take you to the chemist and get you some special cream for your eyes and you will be able to see in the morning."
So off they went to the chemist, got the cream, and went home, all the while the little boy was getting more and more excited at the prospect of being able to see again. Once they got home, the mother put the cream on the little boy's eyes, wrapped a bandage around his head, and took him to bed.
The following morning the little boy stumbled into his moms bedroom and excitedly shouted "Quick mummy, take off the bandage so that i will be able to see again."
So the mother slowly took of all the bandages, taking her time, and all the while the little boy was getting more and more excited. Once they were off, the little boy said "But mummy, I still can't see."
To which the mother replied, "April fool!"