OPD SCAN ARK – 10000, FINAL FIT SOFTWARE Y EXCIMER LÁSER NIDEK EC – 5000; the only technology of its kind in Medellin, which allows us to assess the visual problems of each patient, designing a different program to solve the defect of each eye. One eye can present entirely different problems to the other, just like the prints on each finger are different although they belong to the same hand. In this way an exact calculation can be made of the treatment required by each individual and to anticipate the result of the surgery in terms of time and real experience.