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Eyeglass Basics:
Eyeglasses may be ancient in
their origins. But in many
ways, they are more popular
than ever, despite recent
innovations in contact
lenses and vision correction
surgery.
Eyeglass Frame Materials
Eyeglass frame materials,
too, have been
revolutionized with the
advent of new plastics and
various types of metals.
Frames generally are
fabricated from plastic or
metal, but can be made from
any workable material. For
safety glasses, you may
require an extra tough
plastic, such as
polycarbonate. If you suffer
from skin allergies you
might need hypoallergenic
materials such as titanium
or stainless steel to avoid
a skin condition known as
contact dermatitis.
Some eyeglass frames have
components that can be
snapped into place, rather
than attached by screws or
other means. This type of
feature can be handy if you
choose to "mix and match"
different colored temples
with the same set of lenses.
Certain types of eyeglass
frames now also are highly
flexible, which reduces the
possibility of breakage.
Spring hinges are also
flexible. These types of
frames are ideal for kids'
eyeglasses, because of the
durability factor.
Improved designs of nose
pads also contribute to
comfort and the look of how
eyeglasses are positioned in
front of the face. New
silicone nose pads, for
example, can prevent
"slippage" but are so
lightweight and soft that
they are hardly noticeable.
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