What the heck? Who would even have thought of this?
Scleral tattooing progressed from the eyeballs of pigs in butcher shops to people looking for iris-popping artwork, if that doesn't sound painful enough maybe the fact it temporarily turns your tears black wouldn't keep you from crying.
The daredevil artwork was pioneered by artists after trial and error procedures and is categorized as a rising star in the extreme body modification art world.
Tattoo and body modification artist Russ Foxx told Huffington Post that some of the side effects experienced from too much ink in the eyes are long headaches, extreme sensitivity to light, and migration and staining of ink to the immediate tissues. Obviously, these risks go up if you have previous eye problems or contact lenses.
http://www.medicaldaily.com/scleral-tattooing-what-are-risks-associated-tattooing-eyeballs-245108