大象传媒

15-year-old Sam has a condition called optic nerve atrophy and is losing his sight.

He's hoping to raise 拢6,000 to get non-invasive electrical stimulation in Germany, a treatment not available on the NHS.

Sam and his parents Gary and Lisa talk to Claire Carter about how his eye condition affects him.

Sam says he'd like to get the treatment in time to sit his GCSE exams.

Image: Sam's family.