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Possible Reasons behind your Refractive Error and Tips to Rectify it

By  ,  Onlymyhealth editorial team
Aug 13, 2014
4.8 / 5(4 Ratings)
Quick Bites

  • Myopia blurs vision of objects at a distance.
  • The eyeball becomes too long or the cornea is too curvy.
  • Images are formed in front of retina and not on it.
  • Headache and strain on eyes are common symptoms.

More

Nearsightedness or myopia has affected a significant population across the planet. However, this disorder can be easily rectified with glasses, contact lenses or surgery. People who suffer from myopia generally have problems with seeing distant objects but, they an easily see objects that are kept near. This means that if you are suffering from nearsightedness, it will be a task to read road signs when they are at a distance. But, as you get nearer they appear clear to you.

Myopia Causes

Here is why it Happens

People suffering from nearsightedness have refractive error which means that their eyeball is too long or the cornea is too curvy implying that the light entering the eye will not be focused correctly. in this condition, the images of objects focus in front of the retina, which is the light-sensitive part of the eye, instead of directly focusing on the retina leading to blurred vision.

Myopia is usually hereditary and can be diagnosed in childhood. The disorder usually rectifies with time but, there are also chances that it can worsen with age.

Rectifying Myopia

There are multiple ways in which you can treat the refractive error. If a surgery is not what you would prefer, you can resort to glasses or contact lenses to correct nearsightedness. When you suffer from myopia, the prescription for your glasses or lenses will be a negative number like -3.00. As the number goes higher, the lenses keep becoming stronger. The corrective measure would help the eye in focusing light on the retina making the vision clear.

Some people do not believe in experimenting with their looks and wearing glasses is not an option for them. For such people, refractive surgery can eliminate their fear of glasses or contact lenses completely from their life. Some of the most common procedures to treat nearsightedness include:

Photorefractive keratectomy: also known as PRK, a laser is used in the surgery to remove a layer of corneal tissue. The surgery helps in flattening of the corneal curvature and lets light rays to focus closer to or even on the retina.

Laser-assisted in situ keratomileusis: the surgery is also known as LASIK. A femto laser or a mechanical instrument is used in the surgery to cut a thin flap through the top of the cornea. An excimer laser is then used to sculp the exposed corneal tissue, and the flap is dropped back to its original place. LASIK is the most common surgery which is used to rectify the vision probem.

Myopia Causes

Symptoms

People who suffer from nearsightedness often experience headaches, strain on the eyes, squinting, or fatigue while driving, playing sports, or looking more than feet away. Children who suffer from the disorder often are unable to see the board in their classroom from a distance.


There are numerous disorders related to the eyes which can scar you for life. Fortunately, myopia is not one of them. It can easily be treated and your dependence on glasses can be eliminated forever.

Image courtesy: Getty Images

Read more on Nearsightedness.

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