BEN UNDERWOOD lost his eyesight at the tragic age of three to retinal cancer

Duration: 47:07 Minutes

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Distributor: DRG

But despite his handicap he shoots basketball hoops, zooms around on a skateboard and can weave between lampposts and parked cars without any help. Incredibly, Ben has a developed an extraordinary sound technique to help him see.

Like bats and dolphins he clicks to ‘see’ his surroundings – a process known as echolocation.

His remarkable talent has brought him to the attention of scientists at the University of California Santa Barbara who conduct tests into his amazing ability.