A Connecticut boy is among four children all born with severe childhood blindness who gained “life-changing improvements” to their vision after an experimental trial of gene therapy. Jace was just 2-months-old when his mother DJ and father Brendan noticed problems with his eyesight.

Jace, 4, from Connecticut, was registered legally blind and only just able to distinguish between dark and light before undergoing treatment at Moorfields Eye Hospital in London

A young boy, by the name of Harvey, is seen before and after he received gene supplement therapy for a rare inherited eye disorder that caused him to be blind. The after results show a miraculous development in his eyesight.