Hypermetropia (Far-Sightedness) | Why It Is Necessary To Know All About It

Hypermetropia ! Are you worried of having an eye issue

What is Hypermetropia ?

Hypermetropia, also known as Far Sightedness / long sightedness or hyperopia is a common vision disorder . In this type of refractive error close by objects appear to be blurry while far objects appear to be normal. In general a hyperopic eye can see television clearly while finds difficulty reading a book. Primarily it results in blurred vision for near objects, but may cause distant objects blurred depending upon the severity.

Understanding what happens in  Hypermetropia

In case of a normal eye, when we see an object the light rays gets reflected from the object and enters eye lens through cornea. The eye lens bends the coming light rays and focus it on the retina. 

But in case of a hyperopia visual image gets focused behind the retina. It is caused mainly due to two reasons. They are :

  • Low converging power of eye lens due to weak action of Ciliary Muscles.
  • Distortion in the shape of Cornea

This causes light rays to focus at a point behind the retina. Which is why the image formation takes place behind retina and not on it causing a blurry image.

Hypermetropia Signs and Symptoms

People suffering from far sightedness may suffer from :

  • Eye Strain
  • Headache
  • Blurred Vision
  • Eye Turning

Far sightedness signs and symptoms gets worse when conducting nearby vision tasks without rectifying the vision for a longer duration of time. The vision system can compensate for small amount of visionary loss  caused but may prove to be fatal if efforts are exerted over prolonged period of time.

How is Hypermetropia Diagnosed?

Far sightedness  can be diagnosed by an Optometrist during a routine eye examination. This is usually initiated by a vision acuity test.  In this test a visual standardized charts or cards with rows of letters that decreases in size from top to bottom are shown. You will be asked to cover one eye and read the texts on the board. The test will then be followed by your other eye closed with the same procedure.

Positive lens are prescribed to increase the overall power of the eye. The power of the lens depends upon the extent of refractive error you possess. With the help of retinoscope it is  determined and then the exact required lens is prescribed.

What are the treatments available ?

Hypermetropia can be treated with corrective eye glasses and contact lens.

However there are some alternatives available where it is corrected by having an eye surgery for suitable candidates.

  • Traditional Methods : In this conventional method eye glasses and contact lens are used with a positive lens. This method is most safe and has high level of success rate. It is mostly prescribed for all patients and works extremely great with all.
  • Surgical Methods : There are several surgical methods available which acts as an alternative. Most of the people who don’t want to wear glasses and eye lens go through this process. Although this process is a bit complex as here eye needs to be operated, but may prove to be a good alternative over traditional methods.

The surgical methods include :

  1. Lasik 
  2. PRK

 

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