Corrective lenses worn at night refer to keratoplasty lenses, which are more often used among children because contact lenses allow the shape of the cornea to change, eliminating the need to wear glasses during the day and allowing clearer vision. However, keratoplasty lenses are special contact lenses that also require contact with the cornea and may cause corneal abrasions and infections, which can be recovered after 1-2 days of medication, such as calf blood gel. It may also lead to a permanent loss of vision. If you are wearing keratoplasty lenses, you need to review your cornea regularly to prevent problems before they occur. Keratomileusis not only corrects vision, but also controls the growth of myopia to some extent. It has its advantages and disadvantages, and the need for contact lenses should be explored on an individual basis.