Dr. de Ortueta said that TransPRK has become his excimer laser procedure of choice for refractive surgery, replacing LASIK.
“Epithelial healing and visual recovery occur much faster . . . compared with traditional PRK or LASEK, and while the healing process after [TransPRK] still takes longer than after LASIK or femto-LASIK, most patients will achieve binocular visual acuity of 20/25 or better by day 4,” he said. “Compared with LASIK, however, the . . . procedure has many advantages.”
Outlining its benefits, Dr. de Ortueta explained that it allows a nearly perfect correspondence between the topography and the cornea. In addition, it avoids flap complications, related activity restrictions for the patient, and the need for a microkeratome or femtosecond laser.
“We still offer LASIK to all individuals who would be appropriate candidates, but we find that the idea of a flapless procedure is very appealing to patients,” Dr. de Ortueta said.
TransPRK also induces less biomechanical changes and has a lower risk for causing ectasia compared with LASIK.
In addition, surgical time is faster. For example, laser treatment time for a 4 D myopic correction is only 40 seconds, which makes fixation easier for the patient.
There is the potential for haze after TransPRK as there is with any surface-ablation procedure, Dr. de Ortueta noted.
“We have now treated more than 700 cases with this new technique,” he said. “Even though we do not use mitomycin-C on virgin eyes, we have observed a <1% incidence of clinical significant haze.”
Diego de Ortueta, MD