Laser eye Refractive defect correction operations are divided into two general categories: corneal correction or intraocular lens implantation. Refractive defect correction surgeries include femto LASIK, LASIK (PRK) and smile surgery on the cornea. The number of glasses that can be corrected with these operations is up to 9 in myopia and 6 in hyperopia and astigmatism. Most people are in this range, in some people it is not possible to correct refractive errors with Femto LASIK, LASIK (PRK) and smile methods. In these cases, intraocular lens implantation can be a suitable option. There are glasses on the cornea. No, intraocular lens implantation is possible. The advantage of eye LASIK - LASIK / LASIK costs less.. - LASIK / LASIK is a shorter procedure.. - LASIK eye / LASIK does not require anesthesia or sleeping medication during the operation. - Due to the more time needed to prepare the lens, LASIK / LASIK is done faster and is an advantage for people who do not have much time for the procedure. - In cases where the cornea is thin, myopia or astigmatism can be corrected by intraocular lens implantation. The eye is better... - The corneal tissue is not shaved... - It causes less dryness of the eye after the operation.