Hi..Lasik is a good option for low to moderate myopia , it is safe and effective , of course mandatory tests are required before going ahead. If glass number is high and corneal thickness is less, then ICL option is used to correct number.,so basically for high myopia. Every procedure has safety and efficacy and some side effects, if the benefits far outweigh then only that procedure is done .it is beyond the scope of this platform to discuss all..so kindly meet a doctor or take video consult please.