We evaluated the visual, refractive and ocular aberrometric outcomes after wavefront-guided (WFG) laser in situ keratomileusis (LASIK) for the correction of myopia using an excimer laser platform with Iris Registration (IR) technology (STAR S4IR excimer laser, Abbott Medical Optics, Santa Ana, CA, USA) and combined with a new Hartmann-Shack wavefront sensor (iDesign aberrometer, Abbott Medical Optics, Santa Ana, CA, USA) capturing 1250 data points from a 7.0-mm pupil and using Fourier reconstruction for aberration data.
It’s a way of measuring the eye before treating it to get rid of any spectacle error present. Because it uses more ‘data points’ than older instruments, it gives a more accurate assessment of the eye in planning for it to be able to see without the need for contact lenses or glasses.
A new technique being used to treat myopia is called SMILE. That stands for SMall Incision Lenticular Extraction. It is a little different to LASIK. With LASIK a femtosecond laser is used to make a flap in the cornea which is semicircular and which is lifted up to expose the underling corneal stroma. An excimer laser is then used to reshape the stroma before the flap is put back down over the treated area.