When a laser treatment is no longer a sufficient treatment, for example, for refractive errors of more than -10 or +4 diopters, or if the cornea is too thin, implants are a good alternative. ICL is mainly used in young patients up to the age of 45, as the ability of the body’s own lens to accommodate is not impaired. Thus, it is even possible for people with extremely high refractive errors to live without glasses or contact lenses until the onset of presbyopia from approx. 45 years of age.