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What Is Squint (Pterygium) or Strabismus?

Strabismus or squint is a misalignment of the eyes where the two eyes are pointed in different directions. This problem may appear commonly in kids but can also arises later in life.

How is Squint Caused?

The basic reason of emerging squint is by misaligned eye muscles. However, we are not been able to understand the exact reason of same. Many factors can be responsible for strabismus. They include:

  • Brain:
    Inappropriate development of the "fusion centre" of the brain Problems with the "eye movement" centres of the brain Any injury to or disease of the eye muscles or nerves
  • Genetics:
    Another factor is genetics, and it is known that strabismus may run in families. But it can also occur to anyone. The condition occurs equally in males and females.
  • Eye Conditions:
    Any related eye conditions may also give rise to strabismus. In cases of cataract, injury or tumor within the eye, the eye may frequently turn in or out.
  • Health Issues:
    Besides the conditions mentioned above in children, there are certain disorders in adults which are associated with strabismus. These include:
    • Thyroid disease
    • After cataract surgery
    • After retinal detachment surgery
    • Myasthenia Gravis
    • Paralysis of eye muscles due to Diabetes and Hypertension
    • Orbital fracture