Two cases of complete unilateral congenital heterochromia or Iridum The first two clinical cases correspond to two women of 30 and 48 years aged with iridum heterochromia of the left eye. The right eye was in one case green and in the other blue. The Neweyes laser treatment was performed with the IRÎZ Workstation, and after several sessions the result was satisfactory in both patients, with final results very similar to the contralateral eyes.