PTK gets rid of superficial irregular tissue from the cornea making use of an excimer laser. It is frequently useful for corneal scars, floor irregularities or recurrent erosions. Certainly, LASIK can accurate myopia by flattening the cornea so distant objects seem clearer. It is additionally useful for hyperopia and astigmatism. https://free-bookmarking.com/story20927625/how-much-you-need-to-expect-you-ll-pay-for-a-good-lasik-eye-surgery