Cause Of Nearsightedness

Cause Of Nearsightedness

Nearsightedness is medically known as myopia. In this vision defect, the shape of the eyeball changes from round to egg-shaped, causing the light to fall in front of the retina rather than on the retina.

As a result, the person cannot see things at a distance, but can see things clearly which are close. Usually if parents are nearsightedness, the children will also tend to be nearsighted.There is a belief that one of causes of nearsightedness is engaging in activities where things are close to the eyes. These activities include working on computers, reading or sitting and watching television from close. Scientific research has show that people who do a lot of reading for long stretches of time do tend to suffer from more nearsightedness compared to people who do not.

Other causes of nearsightedness include the following:

  • Pathological myopia is a condition where the rear of the eyeball continues to grow even after the eyeball attains normal adult size.
  • Secondary myopia occurs due to preterm birth or because of some eye disease.
  • Pseudomyopia develops all of a sudden, and the condition grows from bad to worse quite fast due to an underlying health condition like untreated diabetes.
  • Nearsightedness can also occur due to eye problems like cataract or keratoconus.
  • If a baby is born with retinopathy of prematurity, then it is quite likely that the baby will develop nearsightedness as he or she grows a little older. This is usually seen in babies that are born premature.
  • People who suffer from severe nearsightedness have a high chance of developing glaucoma or suffering from retinal detachment.

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