How to select sunglasses?
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The document provides information about sunglasses, including their purpose of protecting eyes from UV rays and reducing eye strain. It discusses common materials used like glass, polyurethane, and polycarbonate. It also describes different lens colors and their properties, such as brown blocking brightness without color alteration. Tips for choosing sunglasses include making sure frames don't pinch or rub and using a microfiber cloth for cleaning. Accessories like protective cases and cleaning cloths are also recommended.
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Sunglasses
Sunglasses are protective eyewear designed to prevent damage to the eyes from bright sunlight. The document discusses the history, ideal properties, standards, and construction of sunglasses. It notes sunglasses should reduce sunlight intensity for comfort, eliminate hazardous light spectra, resist damage, preserve night vision, and allow normal color vision. Sunglasses are categorized based on light transmission percentage and intended use, from cosmetic lenses transmitting over 40% of light to strongly colored special purpose lenses transmitting a minimum of 3% of light. Common tint colors like grey, green, amber, and brown are described in terms of their light-filtering properties and best uses.
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How to select sunglasses?
- 2. Introduction to fashionable eye wear: Sunglasses are more than a fashion accessory. It is very much useful to protect our delicate organ- eye from harmful ultra violet rays from sun. It also helps to enhance vision and thereby reduces eye strain.
- 3. Material used The material used for making the sunglass determines the quality, clarity, weight, durability and price. Some important materials used are: glass, NXT polyurethane, polycarbonate and Acrylic KNOW MORE ABOUT LENSES:
- 4. Sunglasses are available at various colours. Each colour has its own property in allowing the sunlight to pass through
- 5. . Brown/grey/green: these colors are color- neutral. They cuts down the overall brightness without altering original colors. These shades are intended primarily to cut glare and thereby reduce eye strain.
- 6. Yellow/amber: These colors provide less overall brightness protection and are very good option in moderate-to– low level light conditions. These glasses are perfect for skiing, snowboarding and other snow- related sports.
- 7. Rose: This glass gives a brighter vision. They are excellent in low light visibility and also enhance contrast effect. Rose colour sunglasses enhance visibility of objects against blue and green backgrounds.
- 8. For branded sunglasses, there were several layers of coatings. These may include hydrophobic coating to resist water, anti-scratch coating to improve durability.
- 9. Here are some tips when trying on a pair of sunglasses. Frames should not pinch or rub on your nose and ears, but to be snugly Frames should be light enough to avoid excess friction on nose and ears. You eye lash should not contact with the frame
- 10. Use a soft microfiber cloth to clean your lenses. Avoid facial tissue for cleaning since these tissues are so abrasive for safe cleaning How to clean your sunglasses?
- 11. Accessories to be checked while purchasing sunglasses: Most of the following accessories are available along with branded sunglasses. Protective case: If your sunglass don’t come with hard padded case, then buy one. The case should protect your glasses from breaking and scratching. Cleaning cloth: A basic supply for cleaning Retainers: These are a must for active sports.