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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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Got eye infection post cataract surgery. Need advice.
Hello Sir, my mom (70 years), went through cataract surgery, but got infection ...
Female 70 , Bangalore
22 1 Day Ago
Blade free cataract surgery procedure details required
Blade free cataract surgery procedure and details regarding types of lens in de...
Female 59 , Ahmedabad
01 21 Mins Ago
looking for Cataract operation in hyderabad.
Which lens is good for monofocal vision and explain y the lens is best TIA...
Female 54 , Hyderabad
11 31 Mins Ago
my father require cataract operation, what kind of lens should be preferred?
my father require cataract operation . which type of lense he should prefer.and...
Male 77 , Delhi
00 20 Mins Ago
Suggest good doctor/Hospital for performing cataract surgery in Nagpur.
Need to know a good doctor/Hospital for performing cataract surgery in Nagpur. ...
Male 69 , Nagpur
50 2 Day Ago
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