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Common
Refractive Errors
| If your eye is longer
than usual or the cornea and lens have too much
focusing power, light rays focus in front of the
retina instead of on it.This refractive error is
called myopia or nearsightedness, which means
you have poor distance vision.This condition affects
over 25% of adults in the United States.
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| Myopia:
the image is focused in front of the retina, causing
distant objects to appear blurry and close objects
to appear clear. |
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HYPEROPIA-Farsightedness
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| If your eye is
shorter than usual or the cornea and lens lack
the necessary focusing power, light rays focus
beyond the retina.This refractive error is called hyperopia
or farsightedness, which means you don't see
things clearly that are close to you.A young person
may be farsighted, but unaware of it because a soft
lens is able to accommodate for the lack of focusing
power.With age, the lens begins to harden and
hyperopia becomes more apparent.
Until recently,
eyeglasses and contact lenses were the only methods
available to correct refractive errors.The glass or
contact lens compensates for the refraction of your
own lens and cornea by adding or subtracting power.
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Hyperopia:
the image is focused beyond the retina, causing
close objects to appear blurry and images in the
distance to appear clear.
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