It’s the cornea, not an arm tattoo.
A clinic in Argentina is advertising permanent eye color change and presenting itself as a pioneer in Latin America. What it offers has a technical name: keratopigmentation. A precision laser creates a tunnel inside the cornea, the transparent tissue that covers the eye, and a biocompatible pigment is inserted there to change the apparent color permanently.
It sounds like a cosmetic touch-up, but this is invasive eye surgery on one of the most delicate tissues in the body. The list of possible complications includes serious infections such as keratitis, rejection or allergic reactions to the pigment, extreme sensitivity to light, nighttime glare, and loss of visual contrast.
And the most important detail: once the pigment has been implanted, removing or changing it is an extremely complex process, with a high risk of permanently damaging the transparency of the cornea. If something goes wrong, there is no undo button.
