The present invention discloses an implant for altering the iris color, consisting of a completely or partially transparent, semi-transparent or non-transparent, colored, biocompatible and flexible material, wherein the implant is formed annularly, and forms an annular area coming to rest on the iris of an eye, and comprises a central circular opening, wherein at least one attaching means is formed for detachable attachment of the implant the iris. The attaching means is disposed within the annular area of the implant. The invention further discloses methods of locating and fixing an implant for altering the iris color.