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Eyeglass Lenses for
Presbyopia
Presbyopia is a special
challenge for people 40 or
older, because the eye's
natural lens and internal
focusing muscles become less
flexible with aging and no
longer can accommodate
vision at all distance
ranges. Presbyopia typically
is noticed when print begins
to blur, even if you never
wore glasses before.
This means that the usual
type of eyeglass lenses
you've likely been
accustomed to wearing, known
as single-vision lenses, no
longer will work well for
you.
Multifocal and single-vision
eyeglass lenses available
for presbyopia correction
include:
Bifocals: Traditional
bifocals have only two
ranges of vision - near and
far - with a distance zone
established in the upper
portion of the lens, and the
lower zone enabling near
vision tasks such as reading
located on the bottom half
of the lens. The zones are
separated by a noticeable
line.
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Trifocals: These
lenses have three
different zones for
seeing at varying
distances - near,
intermediate, and far -
and can be custom made
for you to accommodate
your lifestyle or
occupation.
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Progressive lenses:
These lenses have many
advantages over bifocals
and trifocals because
they allow the wearer to
focus at many different
distances, not just two
or three. Because they
have no lines,
progressive lenses allow
a smooth, comfortable
transition from one
distance to another.
They are a much better
option for active,
multitasking people.
-
Reading glasses:
Reading glasses can be
obtained with or without
a prescription.
Basically, they provide
single-vision lenses
that sharpen near vision
for people with
presbyopia and/or
hyperopia.
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