Contact Lens Basics

Nearsightedness And Contact Lens


The medical term for nearsightedness is myopia. It is a vision disorder in which you are unable to see the distant objects clearly and accurately while you can see close objects clearly. Myopia is caused due to longevity of the eyeball than the normal thus causing light rays to focus at a time in front of the retina and not directly on its surface. Also a nearsighted eye can see near objects with less effort than a normal eye as it requires less amount of accommodation for near ones as compared to the distant objects. Because of this reason, people remove their spectacles or lenses for close reading and other such tasks.

In fact, a mild nearsightedness is really beneficial after 40 years of age when one experiences normal age related condition called presbyopia as nearsighted eye can see close objects clearly without accommodation. As said by American Optometric Association, about 30 percent of the American people are nearsighted. This condition usually occurs in childhood and can worsen throughout the schooling years. Some of the symptoms of nearsightedness are:

A) Headaches
B) Squinting while viewing distant objects
C) Blurred vision
D) Fatigue

Nearsightedness is also detected with the help of an eye exam and school vision screenings for the school children. Now the question arises whether this condition can be prevented or not? Well, the answer is yes. Fitting gas permeable contact lenses in some nearsighted youngsters would slow down or halt the progression of their myopia.

Some doctors are also advised to use bifocal lenses to reduce their accommodation stress while reading. It is believed that relieving stress could reduce the chances of youngsters having nearsightedness or myopia, however this is still controversial.

Nearsightedness can be corrected by using spectacles, contact lenses and refractive surgery. You have to wear your lenses all the time or when you need distance vision depending on your vision problem. A person with nearsightedness usually has a negative number as a prescription. The higher the numeral, the stronger would be the lenses. Normally, a mild nearsightedness is easily corrected but in some cases it becomes more severe which is considered as pathologic and develops in the age of 12 when the person has an extraordinary elongated eyeball. It may result in loss of vision.