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What are cataracts?

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A cataract is a buildup of dense, hazy tissue in the lens of the eye. The lens is produced when proteins in the eye bunch together and prevent the retina from receiving clear images. Detailed integration of the retina to process nerve signals from light that passes through the lens. It transmits information that the optic nerve sends to the brain.

It becomes worse over time until it obstructs your vision. Although you can get cataracts in both of your eyes, they frequently don’t happen at the same time. Older folks typically develop cataracts. More than half of Indians will either have cataracts or have undergone cataract surgery by the time they are 80 years old.

Causes of Cataracts

There are multiple causes of cataracts. These consist of:

  • An abundance of oxidants, or oxygen molecules that have undergone chemical modification as a result of regular occupancy.
  • Smoking
  • Ultraviolet radiation
  • Using steroids and other medications on a daily basis
  • A few illnesses, such as diabetes
  • Trauma
  • Radiation therapy

Types of Cataracts

There are different kinds of cataracts. They are divided into groups based on where and how they show in your eye.

  • Cataracts in the nucleus, form in the lens’s middle and cause the nucleus to cloud and turn yellow or brown.
  • Posterior capsular cataracts, which harm the back of the lens, grow more quickly than the other two types and have wedge-shaped nucleus edges.
  • Newborn cataracts, which are present at birth or develop throughout a baby’s first year, are less common than age-related cataracts.
  • Medication or illness may cause secondary cataracts. Cataract formation is related to both diabetes and glaucoma. Prednisone usage and other drugs can occasionally result in cataracts.

Cataract Symptoms

  • Difficulties seeing at night
  • Perception of fading colors
  • Greater light sensitivity
  • Circular lights around the halos
  • Double vision in the eye that is affected
  • The requirement for routine adjustments to prescription eyewear


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