Follow-up that includes data from 264 eyes seen at 7 years after surgery show that small-incision lenticule extraction (SMILE, Carl Zeiss Meditec) is safe, effective, and provides stable correction for eyes with up to –14.0 D of myopia and up to –6.0 D of astigmatism.
Reviewed by Osama Ibrahim, MD, PhD
Results from long-term follow-up show that small-incision lenticule extraction (SMILE, Carl Zeiss Meditec) provides safe, effective, and stable correction of low to high myopia with astigmatism, said Osama Ibrahim, MD, PhD.
“We have been doing SMILE for more than 10 years, and there are still some challenges that need to be addressed, but SMILE is here to stay,” said Dr. Ibrahim, professor of ophthalmology, Alexandria University, Alexandria, Egypt. His comments were based on data from 5,263 eyes, of which 264 were seen after 7 years.
Because of access to research software, the amounts of sphere and cylinder corrections exceeded those available commercially. Preoperatively, manifest refraction spherical equivalent (MRSE) for the entire cohort averaged –5.92 D ± 2.13 D and ranged from –1.25 to –14.00 D; MR cylinder averaged –1.26 D ± 1.04 D and ranged up to –6 D. and we get very good results.
At 1 week after surgery, mean MRSE was –0.15 D ±0.51 D (range, +2.00 to –3.50 D) and mean MR cylinder was –0.12 ±0.38 D (range, 0.00 to –2.75 D).
“Some cases were initially undercorrected intentionally, and we had some overcorrections that occurred because there was no software adjustment at the time of the procedure,” Dr. Ibrahim said.
Osama Ibrahim, MD, PhD
E: [email protected]
This article was adapted from Dr. Ibrahim’s presentation during Refractive Surgery Subspecialty Day at the 2018 meeting of the American Academy of Ophthalmology. He is a consultant to Carl Zeiss Meditec.