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Large increase in non-powder gun-related eye injuries. A study investigated sports- and recreation-related eye injuries during a 23-year period and found a slight decrease in eye injuries overall; however, the rate of eye injury associated with non-powder guns (Including BB, pellet and paintball guns) increased by almost 170 percent. Source 4r.
Based on my own experience in the field (Avid airsoft player, former paintball player), most involved are well aware of the danger, but younger generations are often… lackadaisical about proper precautions. Not having goggles on when they should, leaving gun safetys off when in supposedly safe areas where everyone's taken off their gear.
I once even spotted some joker waltzing in with a welder's mask before someone escorted him right back out. Those things have thin glass in there, they're not remotely rated for high speed impact.
My brother-in-law chipped a tooth when adjusting his mask and someone shot him during an airsoft game. I am guessing the increased rate of injury is due to the increasing popularity of the sport.