What are the reasons of  blurry vision or vision lost?

There are many reason of blurry vision or vision lost such as diabetes( high sugar level in blood), high blood pressure any injury to the eye or any substance that goes inside the eye cause lost of vision. As these causes  diminish blood supply to eye results in lost of eye vision. cataract( a cloudy Appearance front of eye ball), Glucoma (glucose deposition in EYE). These are the common conditions that can cause lost of vision. So  let  discuss about Cataract.




Cataract is an eye disease in which there is cloudy appearance in front of eye ball. Cloudy appearance made by cataract cause difficulty in reading, driving and doing other normal work of the daily life.

Earlier cataract do not effect the eyesight but the prolonged problem can cause the vision lost.

What are the symptoms of cataract

The cataract show the following symptoms

  1. Blurry vision.
  2. Increasing difficulty in night vision.
  3. Need bright light for reading things.
  4. Frequently changes in number of glass lens.
  5. Double vision in single eye.

At first the cataract effect the smaller area but as it prolonged , it cover the whole lens by which light pass through and it’s more prominent symptoms of cataract.

What are the causes of cataract?

      The cataract is one of severe problem due to which your eye sight can lost . It is caused by

  • Aging factor

Old age people are more prone to cataract as the tissue of eye lens loss and deposition of different particles are easily occur.

  • Injury

Trauma to eye tissue lead to deposition of different material in front of eye lens .

  • Protein breakdown

Protein and fiber in the lens breakdown causing cloudy appearance in front of lens.

  • Genetic factor

Some genetic problem can cause high risk of cataract such as Down Syndrome .

  • Eye surgery

Cataract can be caused by past trauma or surgery or medical disorder such as diabetes ( high blood sugar level in blood).

How a cataract forms:

A cataract is a cloudy lens. The lens is lie behind the colored part of your eye (iris). The lens focuses light that passes into your eye, producing clear, sharp images on the retina— the light-sensitive membrane in the eye that functions like the film in a camera.


As you age, the lenses in your eyes become less flexible, less transparent and thicker. Age-related and other medical conditions cause proteins and fibers within the lenses to break down and clump together, clouding the lenses.


As the cataract continues to develop, the clouding becomes denser. A cataract scatters and blocks the light as it passes through the lens, preventing a sharply defined image from reaching your retina. As a result, your vision becomes blurred.


Cataracts generally develop in both eyes, but not always at the same rate. The cataract in one eye may be more advanced than the other, causing a difference in vision between eyes.

. Types of cataract:

  There are following types of cataract

Nuclear cataract

     This type of cataract effect the center of lens. It may cause near sightedness.

Cortical cataract

     This type of cataract effect the edges of lens .It may cause opacity in the edges results in eye vision weakness.

Posterior sub capsular cataracts

       This type of cataract effect the back of the lens. It may effect your reading vision.

Congenital cataract

            This type of cataract are develop from birth. This is inherited and form due to trauma in pregnancy period.

Risk factor

       Following are the risk factor that can cause cataract:

  • Increase age

As age advance the blood vessels weak and rupture due to which blockage of blood occur and protein from cell or tissue of eye get out and deposit in eye..

  • High sugar level

As earlier discuss high sugar level diminish blood flow cause main risk to cataract .

  • Smoking

As there are toxin in cigarettes which harm the blood vessels and rupture it may cause cataract.

  • High blood pressure

As increase abnormal the flow of blood may cause surrounding protein deposit on lens.

  • Obesity

In obesity fat content high in blood may cause blockage of blood vessels diminish the blood to eye cause cataract.

  • Previous eye injury

Due to which tissue of eye get weak and protein deposit freely.

  • Use of alcohol

As alcohol damage the liver so lipid do not store and excessively release in blood cause blockage of blood vessels may cause cataract.

How someone prevent cataract

  Cataract can be prevented by:

  • Regular eye check up.
  • Avoid smoking.
  • Avoid alcohol.
  • Avoid oily food.
  • Eat a balance and healthy diet.
  • Avoid use of high sugar and salt in meals.

How can diagnosis cataract

 The cataract can be diagnosed by following test

  • Visual acuity test

It is a visual reading test in which a chart is placed on a distance and test how much u can read word.

  • Slit lamp examination

A slit lamp allows your eye doctor to see the structures at the front of your eye under magnification.

  • Retinal examination

In this doctor put drop in eye to wide the pupil so he can examine back of your eye.

  • Applanation tonometry.

 This test measures fluid pressure in your eye. There are multiple different devices available to do this.

What is the treatment for cataract:

  The treatment of cataract is symptomatic as we treat the causes of the problem and prescribe medication according to it then guide patient to wear eye glasses . If the patient is not treat by these strategies doctor follow the surgery procedure.

Lifestyle and home remedies:

To deal with symptoms of cataracts until you decide to have surgery, try to:


  • Make sure your eyeglasses or contact lenses are the most accurate prescription possible.
  • Use a magnifying glass to read if you need additional help reading.
  • Improve the lighting in your home with more or brighter lamps.
  • When you go outside during the day, wear sunglasses or a broad-brimmed hat to reduce glare.
  • Limit your night driving.



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