In order to tell if a child has dyslexia, they have to be seen by a doctor. A child can be called dyslexic if they cannot read or write well and there is no other reason for the problem. Doctors are trying to create early tests to help find out whether a child has dyslexia before they are old enough to go to school. If this happens, a child can start to be treated very early, and they may have fewer problems at school. Many well-known people have dyslexia, including: Stephen Hawking, Jamie Oliver, Whoopi Goldberg, Ozzy Osbourne, Jay Leno, John de Lancie, Keira Knightley, Susan Hampshire, Orlando Bloom, Keanu Reeves, Richard Branson, Henry Winkler, Patrick Dempsey, Albert Einstein, and Tom Cruise. These people though continue to thrive with their work.