Laser is done to reduce eye power. It is done after 18 years of age. Second criteria is power should be same for at least one year. If you fulfill these criteria laser can be considered after complete eye examination and corneal evaluation by topography and corneal thickness measurement. If all is fine laser can be done. Normally results are good. There is no guarantee in medical science. You will need glasses for near after or around 40 years of age.

Hi..laser is  safe and effective. Your number is simple . They will do all the tests necessary to see if it is safe for your eyes . As and when u age ..u will require reading glasses s any normal person does.