Surgical conditions for laser myopia: those who have a clear need to take off their lenses, are over 18 years old, and have stable diopter in recent two years. The diopter of myopia should not exceed 65,438+0,200 degrees, the hyperopia should not exceed 600 degrees, the astigmatism should not exceed 600 degrees, and the corneal thickness should not be less than 470μ m. Those who wear contact lenses should stop wearing ordinary soft lenses for 65,438+0 weeks and hard lenses for 3 months. Myopia surgery also has contraindications, and eye diseases must be ruled out before surgery. Intraocular pressure and cornea should be normal; Patients with severe diabetes, systemic connective tissue diseases, abnormal immune function and large pupil diameter should be cautious in such operations.
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