Myopia (short-sightedness)

Patients with myopia can see close things clearly, but have trouble focusing on things in the distance.

The problem can be either:

  • the eye is too long
    • OR
  • the refractive power of the lens is too great

This results in the image focusing in front of the retina.

To tackle this problem, concave lenses (i.e. negative prescription e.g. -1 Diopters for mild to -10 diopters for severe) are used for looking into the distance to bend light outwards and project the image as if it were near.

Patients with severe myopia are at risk of retinal detachment, macular degeneration and primary open angle glaucoma, but usually don’t require reading glasses later in life.

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