The corneal biomechanical changes after SMILE and LASIK refractive surgery were compared based on finite element analysis

Corneal Biomechanical Changes and Tissue Remodeling After SMILE and LASIK.

Purpose To evaluate transient corneal tissue healing and biomechanical changes between laser in situ keratomileusis (LASIK) and small incision lenticule extraction (SMILE) eyes. Methods In each patient, one eye underwent LASIK and the other underwent SMILE. Optical coherence tomography (OCT) and dynamic Scheimpflug imaging (Corvis-ST) was used to assess tissue healing and biomechanics, respec...

A Review of Corneal Biomechanics after LASIK and SMILE and the Current Methods of Corneal Biomechanical Analysis

Corneal refractive surgeries for the correction of myopia, hyperopia, astigmatism and hyperopia are quick and effective procedures, and have been growing in popularity over the last two decades. However, post-surgery corneal ectasia remains one of the most feared surgical complications. This is where the biomechanical integrity of the cornea begins to fail, with progressive thinning of the stro...

Ectasia After Corneal Refractive Surgery: Nothing to SMILE About.

Refractive change induced by the LASIK flap in a biomechanical finite element model.

PURPOSE To study the effect of varying four parameters on the refractive change induced by the LASIK flap. METHODS Using a variety of patient-specific data such as topography, pachymetry, and axial length, a finite element model is built. The model is used in a non-linear finite element analysis to determine the response and change in optical power of the cornea as a function of a material pr...

Ocular aberrations before and after myopic corneal refractive surgery: LASIK-induced changes measured with laser ray tracing.

PURPOSE To determine objectively the changes in the ocular aberrations (3rd order and above) induced by myopic LASIK refractive surgery and its impact on image quality. METHODS The ocular aberrations of 22 normal myopic eyes (preoperative refraction ranged from -13 to -2 D) were measured before (2.9 +/- 4.3 weeks) and after (7.7 +/- 3.2 weeks) LASIK refractive surgery using a laser ray tracin...