Q. What is myopia?
Q.
What is hyperopia?
Q.
What is astigmatism?
Q.
What is presbyopia?
Q.
What is myopia?
A.
Myopia is nearsightedness. A myopic eye can see near objects clearly.
Distant objects
are seen clearly only with the
help of glasses, contact lenses or refractive surgery.
Light entering the eye focuses
in front of the retina.
Q.
What is hyperopia?
A.
Hyperopia is farsightedness. A farsighted eye can see distant objects
more clearly than
near objects, however, neither of them is in crisp focus, especially
after the age of
forty. Farsightedness can be
corrected with glasses, contact lenses, or refractive surgery.
Light entering the eye focuses behind
the retina.
Q.
What is astigmatism?
A. Astigmatism is a condition
that occurs when the cornea has more than one curvature (like
a football as opposed to a basketball).
These multiple curvatures bend light
differently and blurred vision is
the result. Light entering the eye focuses on or in front
of the retina, multiple focal points.
Q.
What is presbyopia?
A.
A presbyopic eye cannot see near objects clearly when distance vision
is corrected with
glasses or contact lenses. It
usually occurs after the age of forty. Presbyopia can be
corrected with bifocal glasses or reading glasses. It can also
be corrected with refractive
surgery.
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