Study: Traditional penetrating keratoplasty versus IntraLase-enabled corneal transplantation for keratoconus at Hospital Oftalmológico de Sorocaba, Brazil. 12

Design and measurements: The registry describes a randomized, single-masked comparison involving 60 actual participants. Conventional mechanical trephination was compared with femtosecond-laser-enabled graft preparation, with postoperative visual recovery among the intended assessments. 12

What is established: The inspected record has unknown status, with a November 2007 update. That is a stale registry status, not evidence of present recruitment. No comparative visual-acuity, astigmatism, wound-complication, or graft-survival result was verified. This procedure is corneal transplantation; it should not be described as ordinary LASIK or evidence that a laser eliminates the risks of transplantation. 12