Rave Tesar hasn’t let blindness stand in the way of his musical career.“I’ve had a very rare condition called adolescent macular degeneration since I was 10,” says Tesar, one of the world’s top keyboard players and also a composer, producer and recording engineer.“I remember in the fourth grade going to the school nurse for a routine eye exam and she told me to go home and tell my parents that I needed glasses,” he says.