Blum-Hareuveni T, Rehany U, Rumelt S. Devastating endophthalmitis following penetrating ocular injury during night sleep from orthodontic headgear: case report and literature review. Graefes Arch Clin Exp Ophthalmol. 2006 Feb;244(2):253-8.
Fact: Orthodontic devices of all types are the spawn of the devil. Some go straight for your brain, while others prefer to wait until you are fast asleep and then poke your fucking eyes out.
If this is really.. I am surprised
I had braces with the outside headgear for 4 years before I got them off in 5th grade. I still have many scars inside my mouth which elicit pity from new dentists. But thank God my headgear never attacked my eyes! All I got on the outside was a constant rash from the neckband.