However, the range of diopter correction: myopia does not exceed 1500 degrees, astigmatism does not exceed 600 degrees, hyperopia does not exceed 600 degrees, and 800 degrees is not the limit. . .

Tips: Have you ever paid attention to the risks and sequelae of myopia surgery?

Some ophthalmologists pointed out that since 1998, cases of corneal diseases caused by laser surgery have appeared continuously. Professor Sommertz and maloney studied 14 similar cases involving 23 eyeballs. Eyeball vision improved after LASIK 19. However, four eyeballs had problems after operation. Central corneal opacity usually occurs 3-6 days after operation. The lesion is located in the center of cornea, which is the area with the strongest laser power in myopia laser surgery. The patient also developed "hyperopia", that is, focusing disorder. But after 2 ~ 18 months, the turbidity gradually disappeared. It may be because of laser allergy: Dr. Sommertz and Dr. maloney both believe that "central corneal lesion" is not inflammation, and they warn that corticosteroids cannot be used for treatment, because long-term use may lead to cataract, glaucoma and even blindness. In their case, seven patients underwent LASIK again after corneal opacity disappeared, and their vision was improved, and then there was no corneal opacity. Based on this, the two doctors speculated that the opacity after myopia laser surgery may be the reaction phenomenon of the patient's cornea after laser allergy, so "some external stimulation means are needed" to improve the symptoms.

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