Abstract
Patients and refractive surgeons have alegitimate interest in the long-term results of the most commonly used laser procedures for correction of ametropia. To assess the safety, predictability, stability and late complications according to the current recommendations of the committee for refractive surgery (KRC). Literature search in PubMed with the search term "long-term outcome" combined with either "PRK", "LASIK" or "SMILE". Articles about PRK and LASIK with aminimum follow-up of 10years and SMILE with aminimum follow-up of 5years were evaluated and duplications were eliminated. From atotal of 440 articles that matched these search terms 15articles were selected and analyzed. The results of PRK were described in 4 studies with atotal of 666 eyes, 7 studies (566 eyes) described the results of LASIK and 5 studies (188 eyes) the results after SMILE. Long-term studies with follow-up periods of at least 10 years have shown that PRK and LASIK treatment carried out in the early days of medical excimer lasers have avery high level of safety and late complications occurred only rarely. The effectiveness of particularly high corrections declined over time. In contrast, there was no clinically significant regression within the indications recommended by the KRC. The results of SMILE were not inferior to those of PRK and LASIK. In direct long-term comparisons no procedure showed aclear superiority. Due to technological improvements in hardware and software for both preoperative diagnostics and lasers, treatment performed nowadays is presumably even safer, more efficient and also more stable over along period of time.
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