Cataract: symptoms, causes, prevention,etc

cataract eye lens , cloudy eye , cataract surgery, cataract

What is Cataract

We have a natural lens in our eyes which is responsible for the refraction of light rays which helps us to see. That lens should be clear for clear vision. Clouding of eye's natural lens is termed as Cataract. It is a very common problem experienced by many old aged people.

Types of Cataract

  • Nuclear cataract - it is a type of cataract which forms deep in the central zone of the lens known as nucleus of the lens. The lens starts to harden and turns yellow.
  • Subcapsular cataract - it is a type of cataract which occurs at the back of the lens.
  • Cortical cataract - it is a type of cataract which occurs at the cortex i.e. outer part of the lens and grows towards inward part of the lens.
  • Congenital cataract - it is a type of cataract caused due to genetic issues. e.g. babies are born with cataract due to genetic issues the mother had when pregnant.
  • Radiation Cataracts - Cataracts caused by absorption of ultraviolet rays (UV rays) is termed as radiation Cataracts.
  • Traumatic cataracts - It is a type of Cataracts that develops after an injury to the eye.

Symptoms Of Cataract

  • Cloudy or blurry vision
  • Increased sensitivity to glare
  • Double vision
  • Frequent changes of power in prescription glasses
  • Difficulty seeing at night
  • Fading of colors

Causes Of Cataract

The human eye lens is made up of water and protein. The protein is arranged in such a way that keeps the lens always clear but due to ageing these proteins clump together and forms cataract. Therefore aging is the main cause of cataract but there are some more factors of cataract which are:

  • Obesity
  • Smoking
  • Family history
  • Eye injury
  • High myopia
  • Diabetes
  • High alcohol consumption

Prevention Of Cataract

  • Good Diet - fruits, vegetables, oily fish and whole grains may prevent cataract. Antioxidants, vitamins, minerals, and phytochemicals such as vitamins A, C and E, lutein, zeaxanthin, and omega 3 fatty acids in your diet will definitely help in reducing cataract progression. 
  • Ultra Violet Radiations - Preventing your eyes from UV rays may prevent Cataract. one can use polarized sunglasses, photochromatic lenses, and UV blocking contact lenses to prevent direct contact with UV rays.
  • Smoking - stop smoking as smoking also leads to the formation of a cataract
  • Steroids - Steroids are life-saving drugs but may leads to cataract therefore should be consumed with the proper guidance of a doctor.

Treatment Of Cataract

Surgery is the only treatment of cataract in which cloudy lens is replaced with an artificial lens but one can improve vision by prescription glasses. and can wear sunglasses to reduce glare.


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