| Contact lenses are optical medical
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| | on the cornea of the eye, contact lenses
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| devices, just as spectacles are, and
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| | provide vision that is more natural. The
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| often provide cosmetic and optical
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| | objects appear in the correct size and
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| advantages over them. The more than 35
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| | position, without any distortion. The
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| million people in the United States who
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| | distance between the eye and the glasses
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| have opted for contact lenses over the
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| | can vary, causing the objects to appear
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| use of glasses have done so because of
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| | larger or smaller than they actually are.
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| their convenience, and cosmetic value.
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| | Stable Vision - Contact lenses are not
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| Many people initially feel discomfort
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| | affected by quick body movements, such as
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| when starting to use contact lenses, but
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| | in sports and similar activities, and
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| the benefits of using them far outweigh
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| | remain in place, providing clear and
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| these minor discomforts.
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| | stable vision. Eyeglasses are unstable on
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| The Short History Of Spectacles
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| | your face when running, making your
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| The invention of spectacles has greatly
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| | vision unstable, affecting your
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| influenced progress in the arts and
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| | performance.
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| sciences, yet it is not very clear who
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| | Peripheral Vision - Contacts give you a
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| invented this instrument. In 1270, Marco
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| | wider and better peripheral vision that
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| Polo saw elderly Chinese using this
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| | glasses. Contact lenses move along with
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| device, which they claim to have
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| | your eyes and you are always looking
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| originated in Arabia in the 11th century.
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| | through the clearest part of the lens -
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| The spectacles evolved in the western
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| | the optic zone. On the other hand, the
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| world from the late 1200s onwards, with
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| | frames of the glasses block your
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| riveted spectacles used by monks and
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| | peripheral vision, and when you move your
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| scholars, who held the lenses in front of
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| | eyes to the side, you are no longer
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| there eyes, or balanced them on their
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| | looking through the optical center,
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| noses. The invention of the printing
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| | causing blurred and distorted vision.
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| press in 1452 encouraged the mass
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| | Unaffected By Weather - Contact lenses do
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| production of spectacles, along with the
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| | not fog up when you come in from the
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| growing popularity of books. For the
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| | cold, and neither do they get splattered
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| lower and middle classes, there were
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| | by rain. In addition, they do not steam
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| spectacles mounted in wood, horn, bone,
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| | up from body heat or perspiration.
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| etc, whereas the upper classes used hand
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| | Comfortable - Contact lenses are quite
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| held spectacles in gold or silver frames.
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| | comfortable to wear as they do not pinch
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| The significant advancement in frame
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| | your nose, or rub or press against your
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| design occurred in the 1600s, with rigid
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| | ears and temple, unlike glasses, which,
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| bridges that allowed the spectacles to
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| | in addition, slide down your nose when
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| remain in place. In the present times,
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| | you perspire.
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| there has been a tremendous progress in
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| | Contact lenses have been a boon for
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| frames and lens acuity, with the
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| | children in one particular sense. They do
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| spectacles, whether plain or
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| | not get picked on at school by their
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| prescription, becoming a fashion
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| | friends. This relieves them from the
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| statement.
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| | psychological and physical traumas
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| The Short History Of Contact Lenses
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| | related to wearing glasses.
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| If you are of the view that contact
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| | Glasses, at times do not work, and
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| lenses are a new invention, you are way
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| | contact lenses are certainly superior to
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| off the mark. Leonardo Da Vinci first
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| | them:
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| described and sketched his ideas of
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| | Thick glasses are required in cases of
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| contact lenses way back in 1508! However,
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| | severe short sightedness, making them
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| it took more than 300 years to fabricate
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| | very heavy, and your eyes look very
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| and wear them.
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| | small.
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| Swiss physician A.E. Fick and Paris
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| | Glasses do not provide adequate
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| optician Edouard Kalt are credited with
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| | correction when the difference between
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| fitting the first contact lenses, in the
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| | the visual acuity of your eyes is more
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| late 1800s, for myopia and hyperopia.
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| | than 2.5 diopters - a unit of measurement
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| These heavy glass lenses could be used
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| | of the refractive power of lenses.
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| for a few hours of wear only.
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| | After cataract removal, your eyes need a
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| Plastic came into use in 1936, when
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| | special protection, which only contact
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| William Feinbloom, an optometrist in New
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| | lenses can provide adequately.
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| York, made contact lenses with the
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| | With improvements in technology, a wide
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| central portion of glass surrounded by
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| | variety of contact lenses are available,
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| plastic in the periphery that covered the
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| | both for ophthalmic, as well as cosmetic
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| sclera. 1948 saw a Californian
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| | uses. People who normally wear glasses
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| optometrist, Kevin Tuohy produce contact
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| | can easily and safely shift to wearing
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| lenses completely made of plastic.
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| | contact lenses. People had many
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| The same year, George Butterfield, an
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| | misgivings about using contact lenses,
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| optometrist from Oregon, improved upon
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| | and opted for glasses, but these are no
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| Kevin Tuohy's design with lenses that
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| | longer hold true.
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| matched the shape of the cornea, and
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| | There was a time when contact lenses used
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| would not easily pop off. These lenses
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| | to pop out, and this was during the time
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| have evolved to the present soft contact
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| | when contact lenses were hard lenses.
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| lenses, which are worn by more than 90%
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| | Today, there is no 'popping' out with the
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| of the contact lens wearers in the United
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| | introduction of soft contact lenses.
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| States.
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| | These soft contact lenses conform to the
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| Contact Lenses vs. Glasses
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| | shape of the eye, and do not move or pop
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| Contact lenses offer functional
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| | out.
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| advantages over glasses in areas, such as
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| | Another myth of contact lenses being
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| sports, work - in humid environment, and
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| | expensive is not correct. These are less
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| in occupations where spectacles are
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| | expensive than many of the designer
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| inconvenient and not compatible with the
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| | frames that are available today.
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| equipment used, such as special
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| | Follow the instructions of the
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| headgears. Let us look at some of the
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| | manufacturers to take care of your
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| advantages that contact lenses offer over
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| | contact lenses, to enable them to provide
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| glasses:
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| | you with clear and healthy vision.
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| Natural Vision - As they are worn right
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