 Post-traumatic conjunctivitis was cited as one of the noted effects.Users of the device mostly are children and teenage boys, tend to prematurely open the boga whenever it fails to fire, causing any delayed blasts to fire upon the unsuspecting user's face.Of 178 firecracker-related injuries recorded for the 2006 season (as of December 28) so far, eighteen percent were confirmed to have been caused by use of boga.