[Treatment of keratoconus with minimum invasive methods--case report].

We report the case of a 19-year-old male diagnosed with progressive keratoconus in both eyes. The therapeutic option was: intrastromal ring segment implantation in both eyes, followed by corneal collagen cross-linking with riboflavin and ultraviolet type A at left eye. The postoperative results were favorable: early improvement of vision, no intra- or postoperative complications and without signs of disease progression.