This article is more than 5 years old. Information may no longer be current.
Shared nomogram provides good results in early LASIK cases
Click Here to Manage Email Alerts
SAN FRANCISCO — A nomogram based on multiple centers’ pooled data can provide good LASIK results in the early period of using a new excimer laser, a study presented here showed.
The database also allows the surgeon to improve on initial early results by constructing his own personal nomogram, according to one user of the system.
David A. Wallace, MD, said using the SurgiVision DataLink system after he acquired a WaveLight Allegretto Wave laser reduced his “nomogram angst.” He spoke about his experience with the system here at the American Society of Cataract and Refractive Surgery meeting.
Dr. Wallace said the DataLink system is a Web-based, simplified version of the Kezirian Refractive Consultant. It pools data from U.S. sites that are using the Allegretto Wave laser system. According to WaveLight, about 30% of U.S. users of the Allegretto Wave subscribe to the DataLink system.
Dr. Wallace said that in his first 65 LASIK cases performed with the system, in eyes with up to 7 D of myopia, 84% of eyes achieved uncorrected visual acuity of 20/20 or better. After gathering follow-up data on his patients for 2 months and building his own personal nomogram, his results improved, with 94% of eyes achieving 20/20 or better UCVA, he said.
In the multicenter U.S. trials for regulatory approval of the Allegretto Wave, 91% of comparable eyes achieved 20/20 or better UCVA, he noted.
Dr. Wallace’s enhancement rate also decreased, with 5.4% of eye requiring enhancement with the pooled data nomogram and only 3.2% needing enhancement with his surgeon-specific nomogram, Dr. Wallace said.
“DataLink helped ease the angst that any surgeon faces when transitioning to a new laser system,” Dr. Wallace said.