Dozens of ravers partially blinded at Moscow party after their retinas are burned by laser light show

Up to 30 partygoers at an outdoor rave have been partially blinded by a laser light show.

Health officials confirmed 12 cases of laser-blindness from the event, with reports suggesting up to 17 more.

Some of those affected have lost up to 80 per cent of their vision.

Guests at the Aquamarine Open Air Festival in Kirzhach, Russia, began seeking medical help days after the show, complaining of vision problems.