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Astigmatism

Astigmatism is a common and treatable imperfection in the curvature of the eye that causes blurred vision. This condition is frequently present at birth and may be present in conjunction with nearsightedness or farsightedness. Treatment options can be corrective lenses or surgery.

Astigmatism occurs when there is an imperfection in the curvature of your eye’s cornea or lens. Curvature is usually in round shape whereas an eye with astigmatism is egg-shaped. This causes blurred vision but mild astigmatism may not produce significant symptoms. 

Astigmatism can become a lifelong condition. As the eyeball grows and matures, this condition may also improve or worsen. Children with significant astigmatism have to work harder to see clearly. This can lead to eyestrain, fatigue, and even headaches.

Why blurred vision?

Normally, an eyeball is shaped like a perfectly round ball. Light comes into it and bends evenly, which gives the person a clear view. But if your eyeball is shaped like an egg or football, it changes the way the light passes to your retina which makes your vision blurry or wavy or distorted. Other issues with the way light passes through your retina include farsightedness and nearsightedness.

Just so you know, the cornea is a part of human eye which appears in the shape of basketball with 360 degree roundness in equal measure. In an eye effected with astigmatism, the areas of same cornea looks more puffed than usual curvature. So, this drives images to show up blurry and indistinctive. 

Types of Astigmatism

There are two types of astigmatism:

  1. Corneal Astigmatism: This is a condition where eye’s cornea has mismatched curves.
  2. Lenticular Astigmatism: This is a condition where eye’s lens has mismatched curves.

It blemishes the boundaries and outlines of objects that you see. As a matter of fact even if your depth perception is not pretentious, the overall quality of your vision may turn poor in some or the other way.

The range of astigmatism might regulate the diopters. A diopter is the unit of quantity of the optical power of a lens (curvature). Take a look at the following for various differences in diopters,

Gentle Astigmatism Less than 1.00
Restrained Astigmatism 1.00 to 2.00 diopters
Rigorous Astigmatism 2.00 to 3.00 diopters
Intense Astigmatism Greater than 3.00 diopters

Causes and Risk factors of Astigmatism

Following are the Causes and Risk factors of Astigmatism: 

  1. Heredity
  2. Eye disease or eye injury or surgery
  3. Scarring or thinning of cornea
  4. Irregularly shaped cornea
  5. Distorted shape of the lens
  6. Significant nearsightedness or farsightedness

Bottom line: To avoid vision difficulties caused by uncorrected astigmatism, it’s important to get an eye exam every six months.

Symptoms:

Mild astigmatism may produce no symptoms. If the astigmatism is greater, the distortion or blurring of vision will also be greater.

The symptoms of astigmatism will not be same in every person; in fact, in some cases you don’t find any astigmatism at all. But gathered some most frequent symptoms of astigmatism.

Signs and symptoms of astigmatism may include:

  • Blurred or distorted vision
  • Eye Strain or pain
  • Eye irritation
  • Headache
  • Squinting &
  • Trouble seeing at night

Note: These symptoms could also be symptoms of other disorders. An ophthalmologist can assist in determining the actual problem.

Diagnosis:

Consult an ophthalmologist if you notice any abnormalities in your vision.  You may need a comprehensive eye examination. Your doctor will ask you to read an eye chart to determine the clarity of your vision. They’ll also use the following methods to precisely diagnose and measure your astigmatism:

Phoropter: 

You try on a variety of lenses until you locate the ones that provide the clearest vision.

Keratometer / Topographer: 

A circle of light is used to measure the curve of your cornea in this equipment.

Autorefractor: 

This device shoots light into your eye and records how the light changes as it bounces back. This helps your ophthalmologist determine which lenses you require.

Treatment:

Glasses or Contact lenses:

Almost all cases of astigmatism can be corrected with Eyeglasses or contact lenses. These may usually correct mild to moderate astigmatism. Depending on the severity of the visual distortion, glasses or contact lenses may be required some or all of the time.

Refractive Surgery:

LASIK and PRK are two types of refractive surgery. Some patients with astigmatism may be able to benefit from this procedure.

Prevention:

It’s difficult to prevent. However, as previously noted, there are potential treatment choices to treat astigmatism. Children with a history of substantial astigmatism in their families should undergo a proper eye exam at a young age.

Remember, if this illness stop you from your pleasure of activities or get in the way with your capability to run everyday tasks then consult a good ophthalmologist. An eye specialist can figure out whether the condition astigmatism and, if so, to what range.

Schedule an Appointment with Best Ophthalmologist in the town to know more about complications triggered by astigmatism and its treatments. Call us on 8800644744 for more information. 

                          “The strength  Of  your soul lies within your eyes
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