A cataract results when the normally transparent lens of the eye clouds, blurring vision. Most cataracts are age-related, advancing slowly and progressively until functional blindness occurs.

Cataract can be successfully treated through a surgical procedure that removes the damaged, natural eye lens and replaces it with a permanent, intra-ocular lens implant. The procedure has over a 90 percent success rate. After refractive errors, cataract is the most common vision disorder.



  • Subcapsular cataract(occurs at the back of the lens)
  • Nuclear cataract(forms deep in the nucleus of the lens)
  • Cortical cataract(occurs in the lens cortex)


  1. Aging
  2. Diabetes
  3. Eye inflammation
  4. Eye injury
  5. Family history of cataracts
  6. High farsightedness
  7. Long-term use of corticosteroids (taken by mouth)
  8. Radiation exposure
  9. Smoking
  10. Surgery for another eye problem
  11. Too much exposure to ultraviolet light(sunlight)

Symptoms And Signs

  • Adult cataracts develop slowly and painlessly.
  • Vision in the affected eye or eyes slowly gets worse.
  • Mild clouding of the lens often occurs after age 60, but it may not cause any vision problems.
  • By age 75, most people have cataracts that affect their vision.
  • Being sensitive to glare
  • Cloudy, fuzzy, foggy, or filmy vision
  • Difficulty seeing at night or in dim light
  • white, wedge-like opacities
  • Double vision
  • Loss of color intensity
  • Problems seeing shapes against a background or the difference between shades of colors
  • Seeing halos around lights
  • Decreased vision, even in daylight
  • Frequent changes in eyeglass prescription


  1. Standard eye examination
  2. Slit-lamp examination



The main treatment for a cataract is surgery to remove it.
        If a cataract is not bothersome, surgery is usually not necessary


  1. Better eyeglasses
  2. Better lighting
  3. Magnifying lenses
  4. Sunglasses
  5. Changes around the home (to avoid falls and injuries.)


  1. Permanent vision problems.
  2. Hyper-mature cataract


  1. Control cataract causing diseases
  2. Avoid exposure to causative factors
  3. Wear sunglasses outside during the day(to filter out UV rays)
  4. Stop smoking

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