A laser show at a music festival injured more than 30 people, Russian news reports said.

Some concertgoers lost up to 80 percent of their vision after attending the Aquamarine Music Festival on July 5, the newspaper Kommersant reported.

Twenty people are undergoing treatment in Moscow hospitals, said Elena Grishina, the head doctor at the Moscow Ophthalmological Hospital, the RIA-Novosti news agency reported Monday.

“It is just a deterioration in the sharpness of the eyesight, not a burn,” she was quoted as saying, and said she could not confirm the injuries came from lasers.

“The treatment is not very pleasant. It involves a lot of needles,” Grishina said. “But all the patients are in optimistic spirits, and we are hoping for a good result.”

I bet at first they were all like “WOWWWW I AM SO HIIIIGH” and then they saw the needles coming towards them and were like “WOWWWW FREE DRUGS.” But then they came down and realized they couldn’t see and were pretty bummed. But then they were like “WOWWWWW FREE DOG” and then the real healing began.

[Thanks to my saucy friend Carlos for the tip]