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 10 is formed annularly, and forms an annular area 12 coming to rest on the iris 16 of an eye 14, and comprises a central circular opening 18, wherein at least one attaching means 20, 22 is formed for detachable attachment of the implant 10 to the iris 16. The attaching means 20, 22 is disposed within the annular area 12 of the implant 10. The invention further discloses methods of locating and fixing an implant for altering the iris color.