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Benefits of Contact Lenses Over Glasses
lenses are optical medical devices, such as glasses, and he often has a cosmetic and optical advantages for them. More than 35 million people in the United States decided to use contact lenses for eyeglasses made it because of their comfort value, and beauty. Many people initially feel uncomfortable when they start using contact lenses, but the advantages of using them far outweigh the small inconvenience.
Brief History of the optical
The invention of eyeglasses has influenced the development of art and science, but it is not very clear who invented the instrument. In 1270, the Marco Polo saw elderly Chinese using this device, which they claim came in the 11th century Arab.
Glasses were developed western world since the end of the 1200s, with riveted spectacles, which the monks and scholars who took the lenses out there in front of the eyes or balanced them on his nose. The invention of printing in 1452 encouraged the mass production of the show with the growing popularity of the book. For lower and middle class, the glass is installed wood, horn, bone, etc., while the upper classes use a hand held spectacles with frames in gold or silver.
Significant progress in the frame took place in 1600, a substantial bridge, allowing the glass to remain in place. At present, was a huge success in the intelligence of the lens frame and the glass, either plain or prescription, making a fashion statement.
Brief History of Contact Lenses
If you have a view of the contact lens is a new invention, it is far from the mark. Leonardo Da Vinci, the first Contact lenses are described and sketched ideas for 1508! However, it took more than 300 years to make and carry them.
Swiss physician AE Fick and Paris optician Edouard calcium is credited with the first appropriate contact lenses, at the end of 1800, due to myopia and hyperopia. Glass can be used for hard to have just a few hours.
Plastic was introduced in 1936, when William Feinbloom, a New York optometrist, contact lens in the middle of the glass surrounding around the plastic covering the sclera. 1948 saw an optometrist in California, Kevin Tuohy make the contact lenses made entirely of plastic.
That same year, George Butterfield, an optometrist from Oregon, improved after Kevin Tuohy lens design to match the shape of the cornea and not easily pop out. These lenses have been developed to the current soft contact lenses that are worn more than 90% of contact lens wearers in the United States.
Contact Lenses compared to the glass
Contact lenses offer the advantages of functional areas such as sports glasses work, - a humid environment and the work which the glasses are uncomfortable and not compatible with the equipment used, special headgears . Consider some of the advantages of contact lenses in the glasses offer:
Vision - as they are worn directly on the eye cornea, contact lenses provide vision that is natural. Objects appear in the exact size and position, without distortion. The distance between the eyes and glasses may differ, which causes objects to appear larger or smaller than they actually are.
Stable Vision - Contact lenses do not affect the skin, such as sports or other activities, and to stay in place, providing a clear and stable vision. Glasses are not stable on their face when running, making your vision unstable, affecting your performance.
Peripheral Vision - Contact you with a wider and better peripheral vision, the glasses. Contact lenses move with your eyes and always looking through the clear portion of the lens - an optical zone. Otherwise, the frame of the glasses block your peripheral vision when you move your eyes side, you're not looking for the optical center, causing blurred and distorted vision.
Affected by the time the - Contact lenses do clouds come up when cold, rain, or they can splattered. Moreover, the steam of body heat or sweating.
Commodus - contact lenses are very convenient to use because they do not push your nose or rub or press against the ear and temple, unlike glasses, other than slide your nose when you sweat.
Contact lenses are a great help to children in a particular sense. They may not be in school than their friends. It replaces them with mental and physical trauma related to wearing glasses.
Cup, and sometimes does not work, and contact lenses are clearly superior to them:
Serious short-sightedness of big glasses, making them very hard, and your eyes are too small. Appraisal does not provide adequate correction for the difference between the eyes, visual acuity more than 2.5 diopters of refractive power lenses in units of measurement.
removal of Qatar made, your eyes require special protection, which can provide sufficient contact lenses only. Improvements in technology, there are different types of contact lenses and eye cosmetic used. People who normally wear glasses, you can easily and safely change to contact lenses. People had many questions about how to use contact lenses and glasses chosen, but this is not true.
There was a time when contact lenses are used to exit, and it is a time when contact lenses were hard lenses. Now there is no pop out of the introduction of soft contact lenses. Soft contact lenses conform to the shape of the eye, and not move or pop out.
Fabricated another is not the right contact lenses are expensive. It is cheaper than many designer frames are available now. Follow the manufacturers care of your contact lenses, so they give you clear and healthy vision.
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