What are refractive errors?

There are three conditions of poor eyesight.

  • Myopia (short-sightedness. Please watch our illustration Myopia )
  • Hypermetropia (long-sightedness. Please watch our illustration Hyperopia)
  • Astigmatism (distorted or blurred vision. Please watch our illustration Astigmatism)

These three conditions are referred to as “refractive errors”.

All three involve the distortions in the shape and length of the eye, which affects “refraction”, or the bending of light, as it focuses on the eye’s retina. All three conditions can be treated separately, or in combinations, to provide you with the maximum improved vision.

Most refractive errors occur within a defined range of optical power. Outside this range, the error is considered high, as in “high myopia” or “high Hypermetropia”. These high errors usually indicate that other medical problems within the eye may occur more often.

The major symptoms of refractive errors are decreased vision, eye strain and discomfort, and occasionally headaches. All these symptoms usually disappear with either corrective lenses, Laser Eye Surgery or one of the various forms of Refractive Eye Surgery .

      Read on Myopia (short-sightedness)
                              Astigmatism (distorted or blurred vision)
                                       Hypermetropia (long-sightedness)