MedicalResearch.com Interview with: Dr. David O'Brart Keratoconus Research Institute, Department of Ophthalmology St. Thomas' Hospital, London, United Kingdom   Medical Research: What are the main findings of the study? Dr. O'Brart: There was a slight but significant increase in myopic spherical equivalent refractive error after Photorefractive Keratectomy between 1 and 20 years, particularly in those under 40 at the time of treatment and female patients. Corneal curvature/power remained unchanged but axial length increased over two decades. The procedure was safe with no long-term sight-threatening complications and improvements in CDVA (corrected distance visual acuity) and corneal transparency with time. (more…)