Myopia of 1200 degrees can also be treated, but the treatment of this high degree of myopia usually involves removing its refractive error, while pathological changes like myopia are not possible to remove. There are several treatment options for ultra-high myopia, such as above 900 degrees, which may not be considered for laser surgery and to consider crystal placement. Currently there are two types of lens placement: one is IOL placement without removing the person’s original lens; the other is lens replacement. If a person reaches a certain age and may have a cloudy lens, the original lens can be removed and replaced with a clear IOL, so that the refraction of the eye can reach normal and meet the needs of daily life.