Visual Impairments or Refractive Errors

Reduced vision can occur at any age and affects many people.

You may see less well at a distance, up close, or the image may be distorted.

Visual impairments or refractive errors are deviations in the eye's ability to refract light.

The most common refractive errors are:

  • Nearsightedness or myopia: your near vision is good, but everything is blurred in the distance
  • Long-sightedness or hyperopia: your distant vision is impaired and near vision is even more blurred
  • Cylinder defects or astigmatism: the images are double or oblique
  • Age-related farsightedness or presbyopia: you have trouble reading, usually from the age of 45 onwards
Nearsightedness or myopia
Farsightedness or Hypermetropia
Cylinder aberration or Astigmatism
Age-Related Farsightedness or Presbyopia

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