SMILE vs WFG-LASIK in correction of myopic astigmatism

SMILE was first introduced in 2011 as a flap-free intrastromal laser assisted refractive surgery technique for the correction of myopia and myopic astigmatism. To date, this technique lacks automated centration and cyclotorsion control, so several concerns have been raised regarding its capability to correct moderate or high levels of astigmatism.On the other hand, wavefront–guided LASIK is performed using a pupil-tracking system and iris registration technique that are intended to obtain a more accurate alignment and correction of astigmatism in corneal refractive surgery.So, this study will compare between these two procedures regarding the visual and optical outcome in patients with myopic astigmatism.