Cameron, from Bristol, has a rare genetic condition called Norrie Disease which can cause blindness and progressive hearing loss. He is deaf in one ear and his hearing in the other has deteriorated.

SIMON:We're in Blackheath in South East London and we're on our way to meet Josh, who is eight years old and has uh Norrie disease and was born completely, totally blind. NARRATOR:Josh attends his ...

Cameron, aged 10, has Norrie Disease, a condition that only affects around 40 people in the UK. He was born without sight, and is developing hearing loss. His team has prepared for months to carry ...