Comparison of Corneal and Total Ocular Aberrations Before and After Myopic LASIK

Abstract

Although myopic LASIK induced significant corneal aberrations, the level of partial compensation of corneal aberrations by internal structures remained unchanged. These results suggest that the previously described emmetropization that is effective during development may also be effective with acquired variations in corneal shape.

Seven-Year Changes in Corneal Power and Aberrations after PRK or LASIK

“…16,19,20 During the first year after PRK, the rather large increase in spherical aberration may be related to the changes in epithelial thickness that we have previously demonstrated to occur within the first year after surgery. 21 Otherwise, the observed changes in corneal aberrations remained unaltered even 7 years after surgery, strongly indicating that the induced changes are permanent.…”

Dual versus single Scheimpflug camera for anterior segment analysis: Precision and agreement

“…Wang et al 9 found a mean value 0.56 G 0.14 mm with the older Galilei model. Gatinel et al 29 found a mean value of 0.85 G 0.51 mm using the OPD-Scan device (Nidek Co. Ltd.) in 57 myopic eyes. In 228 eyes, Wang et al 30 found a mean value of 0.479 G 0.124 mm for the anterior cornea with the Atlas Placido topographer (Carl Zeiss Meditec AG).…”

Implantable collamer lens and femtosecond laser for myopia: comparison using an adaptive optics visual simulator

“…This difference was due to increases in LASIK HOAs, especially spherical aberration, during laser ablation in the central cornea (27) . In contrast, ICL implantation does not require surgical tissue ablation and leaves the central cornea untouched; therefore, it produces significantly lower HOAs than LASIK and offers a better retinal image quality (28) .…”