In 146 eyes, measured corneal thinning differed from the surgical plan. The gap was associated with baseline corneal geometry and selected aberrations, but an effect on perceived visual quality was not established.
At six months, average visual outcomes did not differ between selected keratoconus eyes and controls. The sample was small, however, and repeat surgery occurred in both groups.
After ICL implantation, the biometer often misidentified the anterior chamber boundary. Even so, predicted refractive change remained within ±0.50 D for every formula.
A meta-analysis of nine nonrandomized comparisons found no clear overall visual advantage for the newer platform, but cylinder correction was more accurate.
In a multicenter database, modern formulas outperformed Haigis-L and Shammas-PL, while versions using posterior corneal curvature were more accurate than corresponding no-PCC methods.
In a retrospective series of 158 eyes, retreatment improved vision and refraction, but LASIK, PRK and ICL groups differed greatly in size and were selected by clinical indication.
In a multicenter retrospective cohort of 919 patients, SMILE was associated with less residual myopia and greater refractive stability, but procedure selection was not randomized.