Treatments for refractive errors are:

  • Corrective lenses
  • Contact lenses
  • Refractive surgery
  • Treatments for refractive errors include corrective lenses, contact lenses, and refractive surgery.

Myopia and hyperopia are corrected with spherical lenses. Concave lenses are used to treat myopia; they are minus or divergent. Convex lenses are used to treat hyperopia; they are plus or convergent. Astigmatism is treated with cylindrical lenses. Corrective lens prescriptions have 3 numbers. The first number is the power (magnitude) of spherical correction required (minus for myopia; plus for hyperopia). The second number is the power of cylindrical correction required (plus or minus). The third number is the axis of the cylinder. As an example, a prescription for a person with myopic astigmatism may read -4.50 + 2.50 × 90, and a prescription for a person with hyperopic astigmatism may read +3.00 + 1.50 × 180.

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BỆNH VIỆN MẮT QUỐC TẾ DND – International Eye Hospital
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