In the history of our country, the adverse events of orthokeratology mirror belong to errors or defects in labels and product specifications. The labels and product specifications approved by the Drug Administration at the time of product registration are legally binding documents. Orthokeratology mirror, referred to as OK mirror for short, should be fitted and replaced with new lenses from time to time according to the correction effect of the lenses used. Because the product description is not clear, some patients have blurred vision and corneal inflammation after wearing OK glasses for a long time. In severe cases, amebic protozoa, Pseudomonas aeruginosa and other infections occur, which even lead to corneal perforation and eyeball injury. Be sure to find out the above reasons in time and take corresponding measures to avoid further expansion of adverse events ~