Corneal cross-linking (CXL) combined with refractive surgery for the comprehensive management of keratoconus: CXL plus.

reported a case of unilateral corneal ectasia that developed 2 years after LASIK Xtra.[ 109 ] Studies have evaluated the initial safety and efficacy of SMILE Xtra at 1-2 years postoperatively.[ 110 111 112 ] In a comparative study, a slight trend towards myopic shift after SMILE Xtra has been reported.[ 111 ] Although SMILE Xtra has been safely used in forme-fruste keratoconus, authors have mentioned the need for longer duration of follow-up and larger sample size to fully confirm these findings.[ 113 ] Sachdev et al . showed the initial sa

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