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What are the requirements for myopia surgery?

Nov 18, 2025 Source: Cainiu Health
Dr. Wang Lei
Introduction
Myopia surgery requires meeting certain criteria, including appropriate age, stable vision, healthy eyes, suitable corneal conditions, and good overall health. Only when all indicators meet the requirements can surgical risks be reduced and outcomes ensured. Individuals with eye diseases or systemic contraindications should seek timely medical evaluation to assess suitability. Generally, candidates must be at least 18 years old and not older than 55.

Myopia surgery requires meeting several criteria, including appropriate age, stable vision, healthy eyes, suitable corneal conditions, and good overall health. Only when all indicators meet the requirements can surgical risks be reduced and optimal outcomes ensured. If ocular diseases or systemic contraindications exist, timely medical evaluation is recommended to assess suitability.

1. Age requirement: Generally, patients should be at least 18 years old and not exceed 55 years of age. This period typically represents full ocular development and stable refractive status, which helps reduce the risk of postoperative vision regression. Surgery is not recommended for individuals who are too young or too old.

2. Stable vision: Myopia should have remained within ±50 degrees over the past two years, with stable astigmatism. If myopia continues to progress, nearsightedness may recur after surgery, affecting the long-term effectiveness.

3. Healthy eyes: There must be no ocular diseases such as conjunctivitis, keratitis, glaucoma, or cataracts. The cornea should show no signs of injury or thinning, and tear production should be normal. Ocular inflammation or abnormalities increase the risk of infection and complications following surgery.

4. Suitable corneal conditions: Corneal thickness and curvature must meet surgical requirements. For example, laser surgery has a minimum corneal thickness standard; patients with excessively thin corneas are not eligible and must undergo preoperative evaluations to determine suitable procedures.

5. Good general health: Patients should not have systemic conditions such as diabetes, autoimmune disorders, or coagulation dysfunction, nor should they be pregnant or breastfeeding. These conditions may impair healing or increase the risk of surgical complications.

Prior to surgery, patients must follow medical advice to complete comprehensive eye examinations and avoid staying up late or excessive eye strain. After surgery, maintain ocular hygiene, avoid rubbing the eyes and exposure to contaminated water, use prescribed eye drops as directed, and attend regular follow-up visits to monitor recovery progress.

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