Often marketed as toys, non-powder firearms like BB guns, pellet guns, airsoft, and paintball guns are dangerous for children and teenagers due to a high risk of eye injury.
Canada's laws around realistic air guns put police in a tough place
Nerf Guns and Eye Injuries
Can a BB gun kill, or cause a serious injury when a shot hits a vital part like the groin or throat? - Quora
Eye trauma, BB gun. EyeRounds.org: Online Ophthalmic Atlas
Can My Child be Injured By Nerf® Gun?, EyeCarePro
Penetrating head injuries in children due to BB and pellet guns: a poorly recognized public health risk in: Journal of Neurosurgery: Pediatrics Volume 17 Issue 2 (2016) Journals
Trends in BB/pellet gun injuries in children and teenagers in the United States, 1985–99
The Spectrum of Pediatric Orbital BB Gun Injuries: A Case Series
The health risk of having a gun in the home - MinnPost
Toy-Related Eye Injuries: What Every Parent Needs to Know
Toy Guns Can Cause Serious And Even Blinding Eye Injuries
Kids' Eye Injuries From Paintball, Air Guns on the Rise - Physicians News