How do you tattoo your eyes? That's usually the first question that comes up when considering eye tattoos. Most of us understand the process of 'inking' the skin with a needle and tattoo ink. Eye tattoos involve exactly the same process. A needle is placed into the eyeball where colored ink is injected under the cornea of the eyes.
According to EyeBallTattoo.net, eyeball or corneal tattooing is a procedure, when a particular dying agent or ink is injected or otherwise delivered under the top layer of an eye, called cornea. Cornea is a very delicate eye's part with the thickness of about 0.5-0.6 mm in the center and 0.6-0.8 mm at the periphery. About 90% of cornea consists of stroma, a middle layer containing mainly collagen fibers. Stroma is exactly the place, where ink is delivered during eyeball tattooing. In view of miniature structure of cornea and the fact that it is filled with nerve endings, certain medical risks are always present while performing eyeball tattooing. Furthermore, it should be noted that cornea plays a key role in human's ability to see. Thus, damaging cornea may cause serious sight problems up to blindness.
Eye tattoos have been around for thousands of years. While the procedures have changed dramatically over the years, the risks are none-the-less very high. Complications from eye tattoos can include keratitis, which can occur if the ink does not remain in the cornea and leaks to other areas of the eyes, toxic reactions, iridocyclitis, corneal epithelial defects, corneal ulceration, and ultimately blindness. The most common risks associated with eye tattoos are eye infection, perforation and hemorrhage.