This is the heartwarming moment a four-year-old blind boy takes his first step off a kerb without being helped.
Gavin Robert Stevens suffers from Leber's congenital amaurosis, but he has not let his devastating condition stop him from exploring the world.
His parents caught him on camera walking down a step unaided for the first time. The clip posted on YouTube shows the youngster tentatively approaching the kerb and scanning the landscape with his white stick.
His mother tells him to 'find the kerb', and Gavin starts jabbing at it with the stick, exclaiming: "I can do it!"
He then steps into the road as his relatives cheer.
LCA is a rare inherited eye disease which usually renders its sufferers almost totally blind. There is currently no known cure.
Gavin's parents, from California, shared the video of him walking in order to show off his impressive progress and bring hope to the families of other children suffering from LCA.
"We've been working on steps and shifting his feet," his mother Jennifer told the Huffington Post. "To someone who is blind, that needs to be taught."