A young man learned the hard way that you should not aim a massage gun at your eyes. Doctors in Edinburgh, Scotland, treated a student in his 20s who showed up with floaters and flashing lights in his right eye for about a week. At first there was no obvious cause, since he had no history of eye disease or injury. But when doctors dug deeper, he admitted he had been using a percussive massage gun directly on and around both eyes, for several minutes at a time, every week for three months, to ease a tired feeling.
As one would imagine, that was not a good idea. Exams found multiple retinal tears, bruising, and a rare type of retinal break usually tied to serious trauma. Writing in BMJ Case Reports, the doctors said it is the first known case linking massage gun use to that combination of injuries. They want clearer manufacturer warnings against using the devices near the eyes.
Source: Ars Technica