First used by Roman physician Galen in the 2nd century, eyeball tattooing has been practiced for centuries to disguise deformities of the cornea such as opaque white scar tissue. The procedure involves injecting dye directly into the cornea. Though it is usually performed on eyes that have already lost sight, corneal tattooing can also be used to improve vision, such as by reducing glare resulting from other eye surgeries. Which US state outlawed cosmetic tattooing of the white part of the eye? Discuss