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It is mostly an aging related disease caused due to clouding of the lens of the eye. The lens is inside the eye and changes size of the pupil. The lens can enlarge to let more light enter the eye in dark environments and contract the size of the pupil to let in bright light.

Until a person is around age 45, the shape of the lens is able to change. This allows the lens to focus on an object, whether it is close or far away.

With age, proteins in the lens begin to break down and the lens becomes cloudy, preventing light from passing through normally. The vision then becomes blurred. This condition is known as a cataract.



  • Age-related cataracts: Approximately 50 percent of people over age 65 have cataracts.
  • Congenital cataracts: Babies born with cataracts.
  • Secondary cataracts: These may develop as a result of other diseases, such as diabetes, or long-term use of toxic substances, certain medications (such as corticosteroids), ultraviolet light, and radiation.
  • Traumatic cataracts: These can form after injury to the eye.


The adult cataracts develop very slowly and take time to develop fully, however some of the following symptoms start showing early:

  • Being sensitive to glare.
  • Cloudy, fuzzy, foggy, or filmy vision.
  • Problems driving at night because of distraction from headlights.
  • Loss of color intensity.
  • Double vision.
  • Seeing halos around lights.


Eye examination by the Opthalmologist.


Initially this can be managed by glasses and better lighting, however later a surgical intervention is required.

- Cataract Surgery: This treatment removes the cloudy lens and replaces it with a substitute lens (Intraocular lens, or IOL).

You may also like to learn about:

Refractive Errors
Vision impairment/Blindness
Color blindness
Eye infections

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Latest Activity

Need opinion to take COVID vaccine.
Hi, I had a cataract surgery in April and was taking Predforte Prednisolone A...
Female 57 , Chennai


31 Mins Ago

Pls give the package for cataract surgery for both eyes at Pune.
My Mother needs to go for cataract operation for both the eyes but not at a sam...
Female 65 , Pune


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Got eye infection post cataract surgery. Need advice.
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Need to Consult the best doctor for cataract surgery in Mumbai.
After cataract operation,when Ill get discharged ...
Male 50 , Mumbai


1 Day Ago

Want to know the cost of cataract surgery treatment in kolkata.
I want to know the cost of cataract surgery of both eyes....
Male 49 , Kolkata


2 Day Ago