Vision
Disorder Definitions
When
light enters the normal eye, it is bent and focused
on the nerve layer called the retina. When the light
is not properly focused vision is blurry. The technical
term for this is refractive error.
Refractive errors fall into three basic categories.
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1.
Myopia
(nearsightedness or shortsightedness):
This condition results in light focusing in
front of the retina. Individuals with myopia
see near objects clearly, but distant objects
are blurry. |
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2.
Hyperopia (farsightedness):
This disorder results in light focusing at
a virtual point behind the retina. For farsighted
individuals, distant objects are blurred and
near objects are even more blurred. |
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3.
Astigmatism:
This occurs when the cornea is oval shaped,
like an egg or football. In this condition
light is bent unequally, forming two focal
points and preventing a clear image from forming
on the retina. One may have astigmatism alone
or in combination with myopia or hyperopia. |
The three
conditions above can be treated with laser vision
correction.
4.
Presbyopia:
This condition is part of the normal aging process
that affects almost everyone over age 40. It results
from a stiffening of the eye's lens and weakening
of the ciliary muscles which results in decreased
focusing power. People with presbyopia have trouble
focusing on near objects and usually use reading
or magnifying glasses when viewing near objects.
Presbyopia is not
effectively treatable with surgery.
Call
us at 1.877.377.EYES to set up your free vision
consultation, or sign up
online to set up a free consultation.
We
offer LASIK as well as other Laser Vision Correction
and refractive surgery procedures for your convenience
in Manhattan and Long Island New York.
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