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Floaters are entopic phenomenon created by vitreous opacities. Some researchers term it as “symptomatic vitreous turbidity”, which usually refers to primary type in clinic. With the increasing prevalence and aging of myopia worldwide, vitreous floaters are becoming increasingly prevalent in clinics but receiving less attention. Floaters can impair patients' vision and quality of life due to their discomfort and disorientation. A few patients become intolerable and express a strong desire for treatment. YAG laser vitreolysis for floaters has garnered considerable attention in recent years. Although some doctors still have concerns about its efficacy and safety, a handful of studies have found some beneficial effects in recent years. The author has gained expertise in clinical practice in recent years. In this review, we talk about what causes floaters and how to classify them. We also talk about the clinical indications, how YAG laser ablation works, and whether or not it is safe.