How old do you need to be to have laser eye surgery?

The minimum age is 19. There is no maximum age. If you are over 19, it is best if your prescription for glasses / contact lenses is stable (minimal change over a two-year period). Some people who are considering a career that has vision requirements may be able to undergo laser eye surgery before the prescription is stable, with the understanding that the eyes may still change and more surgery or corrective lenses may be required again.