16 March 2015 Last updated at 08:24 GMT
A new type of therapy – Lightscores – aims to help blind and visually impaired children become more active.
Light sensitive sensors placed on different parts of the body trigger sounds as the child moves, encouraging play in more adventurous ways.
The system is part of the “Health Tech and You” exhibition at the Design Museum in London. It is open to the public between 10 March and 26th April.