Author: Gray Rollins

You may be the type of person who never leaves the house without your sunglasses during the warmer months. Not only are they great protection from the sun’s glaring rays, but they’re also quite the accessory these days as well. And if you’re like a lot of people, you probably own more than one pair and scout the sunglass display in the local markets every time you walk by. Well, good for you for taking care of your eyes! But did you know that sunglasses are just important in the winter as they are during the rest of the year? It’s true, and here’s why.

Sunglasses actually play a big role in good eye health. The UV rays from the sun are very strong - all year round - even though they don’t always feel that way on our faces and bodies, especially fingers and toes during the chilling winter months. But nevertheless, they are and we need to protect ourselves - eyes included - from their harmful affects.

It’s actually very serious business, more serious than most people realize. Over time, UV rays can in fact, lead to diseases of the eye like cataracts (opaquacity in the membrane covering the pupil causing a decrease in vision), macular degeneration (discoloration of the cornea), or even cancer, that may require surgery or worse yet, be irreversible. And if your eyes are normally sensitive to bright light and the sun’s rays anyway, you may be headed for even more trouble if you don’t wear sunglasses.

You know how bright the sun can be when it reflects off the snow and hits your eyes - it hurts, right? Add in the ultraviolet element and there you have it. But by simply putting on a pair of sunglasses, you can not only avoid the discomfort of the sun’s bright and harmful UV rays reflected on your eyes, but you’ll also be preventing the possible onset of eye distress such as disease as well. So you see, sunglasses work double-duty (or even triple-duty if they compliment your appearance - wink, wink).

And don’t forget the kids. Even though children look adorable and make us smile when they put on a pair of cute, child-sized sunglasses, their eyes actually need protection the same as everyone else’s. So don’t hesitate to pick them up a pair the next time you’re passing by the kiddie styles and you hear those three little words - “I want that!” because you’ll actually be doing a good thing in consideration of their eye health.

About the Author:
Gray Rollins is a writer for MatrixEyewear.com. Get yourself a pair of Morpheus sunglasses. We also have Trinity Sunglasses.

Article Source: http://www.articlesbase.com/women’s-issues-articles/why-you-need-to-wear-sunglasses-in-winter-too-89279.html

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Ray-Ban was founded in 1937 by Bausch & Lomb after lieutenant John MacCready asked them to make a pair of sunglasses that would not only protect his eyes from the damaging effects of the sun but also look good. Today, they are the world’s best selling sunglasses.

Pilots in the United States Air Force began to wear the sunglasses and when General Douglas strode on to a beach in the Philippines in World War II wearing Ray-Ban, the sunglasses became a massive hit back home in the USA. Since then, Ray-Ban Sunglasses have been worn in hundreds of Hollywood films and remains a favorite among celebrities.

Ray-Ban is a leading brand of high quality eye-wear and combines great styling with quality and comfort. A clean cut design and high quality materials ensure that Ray-Ban sunglasses are the most popular sunglasses on the planet.

Rayban Style

The two most famous sunglasses style in the world are the Aviator and Wayfarer. They also happen to Ray-Ban.

The name of the Aviator sunglasses arose because of the oblique teardrop shape of the lens. Naval aviators found that the oversized sunglasses would help to hide the white skin under their eyes caused by wearing goggles during flying. The bar across the nose also held a cigarette in place.

The glasses are designed to cover the entire eye and to stop sunlight from reaching the eye from between the glasses and the face.

The first sunglasses design to use plastic, the Wayfarer was a radical new look. They were invested in 1952 by Raymond Stegeman for Baush and Lomb.

Originally marketed to pilots, they were quickly found to be popular among female Hollywood stars, such as Kim Novak and Marilyn Munroe. Audrey Hepburn wore a pair of Wayfarers in the movie, “Breakfast at Tiffany’s”.

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People are able to buy designer sunglasses at great prices from the Look Good Sunglasses internet shop. Look great when you buy chanel sunglasses or other designer sunglasses today.

Article Source: http://EzineArticles.com/?expert=Richard_Hurley

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Author: Stephen Jenkins

 

 

There are many different types of tint available today for your sunglasses, and choosing the correct tint can be rather confusing. This article guides you through the different colours and types of tint, allowing you to make an informed choice about the most suitable tint for your own personal needs. We also examine the characteristics of ultraviolet light and why protection is important.

Light travels as electromagnetic waves, similar to the waves on the sea, with peaks and troughs. We specify the different colours of light by the wavelength of radiation they emit. (The wavelength is the distance between two adjacent peaks or troughs of that wave). As light has a very small wavelength, these measurements are extremely small and are measured in units called “nanometres” (nm), where a nanometre is one billionth of a metre!

Think of the colours of a rainbow, with red on the outer part of the curve and blue/violet on the inside. Red has a wavelength of 710nm, green is 500nm, and blue/violet is 400nm. So the wavelength is getting smaller as we pass from the red end of the visible spectrum through to the blue end. Ultra-violet lies beyond the blue/violet band, between wavelengths 400nm to 100nm, but the human eye cannot usually see light with a wavelength smaller than 400nm, making ultra-violet light invisible to us – so we call it ultraviolet radiation.

Although UV radiation is invisible to humans, many animals and insects can detect UV light, which they use in helping to find prey, etc. For example, kestrels can detect the UV light given off by the urine trails that field voles make as they move around, so from high up in the sky, when these birds of prey find many criss-crossing urine trails on the ground, this indicates a good place to hunt for the voles.

One possible reason why we cannot detect UV light is that if the crystalline lens in the human eye has evolved to only focus on a limited range of colours, this helps to give us a sharper image of what we see, whereas if we could focus over a larger range of wavelengths this could lead to chromatic aberration, a distortion of vision that would reduce image clarity.

Ultra-violet radiation can be divided into three main bands or groups, depending on wavelength :-

1. UVC radiation -100 to 290nm

UVC rays are absorbed by the all-important ozone layer that surrounds the Earth as part of the outer atmosphere, thus preventing this radiation from reaching the ground.

2. UVB radiation - 290 to 320nm

UVB radiation is the most dangerous, as this is what can damage the eyes and cause sunburn to the skin. UVB is the cause of snow-blindness, where the radiation induces a photochemical reaction in the cornea and overlying conjunctiva after a few hours exposure, producing swelling of the cornea (oedema) and inflammation of the surrounding tissue. The swollen, oedematous cornea becomes cloudy – hence the blurred vision, and also very painful. There is photophobia (dislike of any exposure to light) and spasm of the eyelids. It usually lasts for a couple of days, and is only alleviated by using local anaesthetic drops, amethocaine 1%, to reduce the pain, and adrenalin drops 0.01% to relieve the congestion.

UVB radiation does not pass through glass, so a simple glass lens would prevent it from reaching the eye. Polycarbonate, a type of plastic sometimes used for spectacle and sunglass lenses, also cuts it out completely.

Some believe that regular exposure to UVB radiation can, over a period of time, contribute to cataract formation at an earlier age than normal, and may also cause the development of pterygia, which are growths of tissue that encroach over the cornea from the sides.

UVB radiation varies with the time of day, being most intense between 10am and 2pm, when the sun is at its brightest. It is stronger at high altitudes, and more intense near the equator, due to the more direct nature of the sun’s rays in this region.

3. UVA radiation - 320 to 400nm

In contrast to UVB, which varies in intensity with the time of day, UVA radiation is more constant with less variation. Also it is not blocked by glass, and so can still pass through to reach the eye. However, the crystalline lens of the human eye absorbs most of the UVA radiation, so hardly any UVA is allowed to pass through to the back of the eye. There is no known evidence that UVA causes harm to the eye, although scientific opinion is still divided and under debate.

UVA radiation was originally thought to have only a minor effect on the skin, but recent studies have shown that whilst UVB causes damage to the surface layers of the skin as sunburn, the UVA penetrates into the deeper layers of the skin, causing damage further down.

Reflected Light

UV radiation not only reaches us directly from the sun, but a considerable portion is reflected from various surfaces around us, to reach our eyes and skin indirectly. Fresh new snow can reflect the most, with up to 80% reflected UV rays. On holiday on the beach, sand can reflect 15% UV light, along with concrete buildings and walls etc. A foaming, frothy sea reflects 25%, whereas still water and normal ground reflects around 10% UV radiation.

Children and UV Light

As UV damage tends to build up over many years of exposure, such as going on holiday to warm bright climates or playing outside on a sunny day, children and young adults are at particular risk, and you should always consider some sort of eyewear protection for them even though they seem to cope with bright light better than us adults (when playing at the seaside, for example).

Wearing a peaked cap is not really enough protection, as a lot of the UV radiation is reflected off the ground (see earlier “reflected light”) and straight into the eyes, especially on a sandy beach. Make sure the sunglasses have a full UV protection.

Choosing the Best Tint for Your Sunglasses

Ideally, you should go for a tint that absorbs at least 98% of both UVA and UVB radiation. If you see a label “UV400“, this means that all radiation up to 400nm (thus all UV radiation) is absorbed or blocked by the lens.

Dark grey, grey/green, or brown are the three main colours to choose from, and is a personal preference. I, myself, prefer grey or grey/green, because it seems to keep the colours true to life, but many people like brown because it can enhance the contrast and so help to make things appear sharper. Amber coloured tints are used to block out blue light, which again enhances contrast, so making the image sharper. Amber tints can therefore be used for skiing, sailing, flying, target shooting etc.

Lenses made from polycarbonate absorb most UV radiation, and wrap around designs are good for preventing light from entering the eye from the sides.

Different coloured tints are available to enhance vision and improve visual comfort for many activities. Sunglasses are very important as they reduce glare and protect against harmful ultraviolet radiation.

The main tints available can broadly be divided into neutral grey, polarising, yellow-brown, green, red and photochromic.

1. Neutral Grey

This filters out all wavelengths of light by an equal amount, and so colours appear more natural looking than with tints of other colours. Grey tints are good for activities where subtle colour differences are important, such as golf, mountaineering and skiing.

2. Polarised tints

Polarised tints are good for reducing glare from reflected light bouncing off surfaces such as water or wet roads, making them a good choice for fishing, water-sports, driving or cycling (on wet surfaces). However, polarised lenses might also reduce important details in skiing or golf.

3. Yellow/Amber tints

Yellow or amber tints help to increase contrast by blocking out the blue end of the visible spectrum, resulting in a reduction of blue light scatter. They enhance differences in contour and make things appear brighter in low light levels. This makes yellow or amber tints good for shooting, snow sports, driving or cycling.

4. Green tints

Green tints help to enhance the background, which makes them a particularly good choice for golf, tennis and some forms of shooting, where the object needs to show up against the background.

5. Red tints

Red tints enhance objects at the red end of the spectrum, and can be used in clay-pigeon shooting where the target is orange, in skiing to give contrast to the changes in reflected light, or in motor sports to reduce the reflected glare from the road.

6. Mirror tints

Mirror tints limit glare, increase absorption and reduce infra-red, thus reducing the build-up of heat. Mirror tints are good for snow sports, water sports, cycling and running.

7. Anti-reflection coatings

Anti-reflective coatings minimise lens reflections, especially from the back surface, and are recommended for racket sports, fishing, shooting and archery.

8. Photochromic tints

In photochromic tints the darkness of the tint changes according to the light levels, most commonly between around 20% to 80% transmission. Generally, two photochromic colours are available, brown or grey. Photochromic lenses are good for sports played in variable light levels, such as golf or tennis.

The following list gives a summary of suggested tints for different sports and activities:-

• Cycling - polarising, yellow/amber

• Golf - green, neutral grey, yellow/amber, brown

• Shooting – reddish-brown, orange, yellow to brown, green

• Skiing – brown, red/orange, neutral grey

• Tennis – green

• Fishing – polarised

• Motor sports – polarising, yellow, red

• Water sports - polarising brown or grey

• Running - green, neutral grey

• Football, and fast moving ball sports - amber

I hope this guide has been of some use to you, but please remember that it is only a guide, so feel free to take it “lightly” (excuse the pun – I couldn’t resist) as the colour of tint you choose for your sunglasses is very personal, so if you prefer a certain colour of tint that falls outside of these guidelines - don’t worry. As long as it blocks out all the ultraviolet light (UV 400) then that’s all that matters. Enjoy your sunglasses!

About the Author:

Stephen Jenkins is a UK optometrist who qualified in 1990 and has his own practice (Watson and Jenkins Opticians) in Chesterfield, Derbyshire. The practice also sells designer sunglasses online and is an official supplier for Oakley, Rayban, Gucci and many more. Advice on ultraviolet light and how to choose the correct tint for your sunglasses. Regular news updates from the eyecare world, such as the latest advances in gene therapy for treating blindness. Free fast UK delivery and low cost worldwide shipping. Visit http://opticalreflections.co.uk/”>http://opticalreflections.co.uk/”">http://opticalreflections.co.uk/

Article Source: http://www.articlesbase.com/science-articles/sunglasses-and-ultraviolet-light-a-guide-to-choosing-your-sunglasses-511548.html

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The importance of having a good pair of polarized sunglasses cannot be measured simply, but there are a number of factors that make having them a good investment. Polarized sunglasses can help prevent serious eye injury due to glare or brightness and, quite frankly, they just look cool. A good pair of polarized sunglasses aren’t too hard to find, but the buyer does need to be discerning in making the purchase.

Regular tinted sunglasses don’t offer the same protection as polarized sunglasses. With polarized sunglasses, all reflected light from the sun is deflected from the surface of the polarized sunglasses by a special lens coating. This makes the sunglasses a favorite and a must-have for fishermen or boaters, as the reflection from the water can often damage the eyes and lead to eye injury after prolonged exposure.

There are hundreds of manufacturers out there who make polarized sunglasses. There are certainly plenty of options to choose from when looking for an affordable pair of polarized sunglasses that will keep your eyes safe from damaging UV rays. Many professionals choose polarized glasses in order to preserve their eyes throughout their career. A pilot, for instance, relies on his vision as he lands a plane, and chooses polarized glasses for the most reliable eye protection from the sun.

Polarized sunglasses are stylish too! Not only do professionals wear them everyday to work, polarized sunglasses are hot with the fashion-oriented crowd as well. Many of the highest quality and style glasses are polarized. The demand by the general public is increasing quickly and manufacturers are responding with a larger selection of their polarized sunglass lines. These sunglasses can be versatile too. One day they are great for an afternoon on the golf course, and the next day they are the perfect protection for your eyes at work.

Whether shopping for expensive sunglasses or just a practical pair, polarized sunglasses represent the best choice in optical protection and cost-effective prevention of serious eye injury due to glare.

Mark Agualera is a long time pool owner in California and knows how important it is to keep your eyes safe by the pool. In addition to polarized sunglasses, Mark recommends Shingle Springs pool service and repair to keep the pool in great shape throughout sunglasses season.

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Author: rejinakelis

Today the world is of computer and about 80% of people work on computer on a regular basis. Staring at flat screen for hours together may cause eyestrain, headaches, dry eyes, blazing, and blurred vision, this is known as computer vision syndrome (CVS). Computer protective glasses could protect you from CVS by improving your vision with or with no prescription. Computer glasses could as well block risky ultra-violet (UV) rays and lessen glare, both of which have been associated to cataracts.

People who wear contact lenses or any other corrective glasses, one difficulty of spending huge hours at the computer is that the standard distance to a computer screen is further away than reading material, but closer than far vision. Bifocals lenses used for readings are not optimized for work at a computer and as reading material is detained in the lap, a computer screen lies dull ahead. It forces bifocal wearers to tip the head up that could generate neck pain and shoulder strain. It might as well cause one to bend in towards the screen to lessen the distance to the range the bifocals are intended to correct.

In other case if you don’t spend long hours at the computer screen to skill CVS, but desire to protect your eyes from glare and damaging radiation, high excellence non-prescription glasses with polarized lenses and UV blockage would serve as outstanding computer glasses. You could also have an optometrist make a pair that is suitable for you, or you could choose to purchase slightly-tinted, optically apt, polarized sunglasses with 100% UV blockage. High quality sunglasses are as well accessible in most sporting goods stores, usually kept in display cases.

If you would like computer glasses, which could double as sunglasses, deem to photo chromic lenses. These lenses ease indoors, and dim outdoors. Polarized sunglasses could further serve you as flexible and suitable computer sunglasses. Photo chromic lenses are too accessible in prescriptions. Computer glasses must be fault free. If you hold the glasses at arm’s span and look through the lenses, they must not waver or deform what lies beyond them. Lenses are accessible in frivolous polycarbonate plastic, or for those with huge prescriptions, in high-index plastic. See your optometrist for a computer test to determine the best prescription, and get rid of your eye fatigue.

About the Author:

rejina is a seo copywriter having more than 3 years of experience in this field who is currently working for the site Safevision.net. For further information on polarized sun glasses,prescription diving mask,prescription snorkel please visit http://www.safevision.net/ or contact me through mail: rejinakelis@gmail.com.

Article Source: http://www.articlesbase.com/diseases-and-conditions-articles/an-introduction-to-computer-glasses-220995.html

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Author: Nick Albert

Well, it looks like Oakley has done it again! This time, with a little help from their friends at Motorola. For some time now, Oakley has been striving to combine personal communications technology with their quality eyewear. Their latest and greatest product, the RAZRWIRE, comes fully equipped with the latest Bluetooth technology and is sure to please even the most jaded techno-geek.
Simply put, the RAZRWIRE is a combination of stylish Oakley sunglasses and a Bluetooth headset from Motorola that stands to provide the user with unparalleled communications mobility. These glasses are the epitome of wearable technology, seamlessly combining both style and function.
The frames are constructed from Oakley’s proprietary O-Luminum, an alloy that is up to 40% lighter than Titanium. They come equipped with spring-loaded hinges which provide an excellent, secure fit. As with other Oakley shades, the lenses are crafted from their patented Plutonite. These lenses filter 100% of UV and blue light, both of which are very harmful for your eyes.
The RAZRWIRE incorporates Motorola’s third generation Bluetooth technology, ensuring that these glasses will be compatible with most Bluetooth-enabled cell phones and devices. Users are able to carry on a telephone conversation even when upwards of 30ft. away from their phone. The headset can be worn on either side of the glasses.
Motorola’s Bluetooth module is incredibly well incorporated into the overall design aesthetic of these glasses. The controls are extremely easy to use, with two volume buttons and an individual button for managing incoming and outgoing calls. While the adoption of headsets for cell phones has not been particularly well-received by the general public, these glasses may allow consumers to bridge that gap without compromising their fashion sense.
While most Oakley stores will be stocked, these shades are not yet available in most stores. You can, however, locate a pair via our sponsored links. They retail for approximately $300USF, which includes the glasses, Bluetooth module, and a charging unit. They come in three distinct frame/lens color combinations Platinum/Gold Iridium, Pewter/Black Iridium, and Mercury/Gray.
This project has evolved into an amazing opportunity for Oakley. They are now extremely well poised to enter into the consumer electronics market. While interest in a product such as this is generally limited to chic and stylish geeks, early studies have shown that there is great mainstream appeal. With a highly recognizable brand name and cutting edge technology, Oakley could well be the new 300lb gorilla on the block.

About the Author:

Written by Nick Albert, Editor of TopSellingSunglasses.com An informational site dedicated to bringing you all the latest style and trend news in the world of Sunglasses. Check out this autumn’s hottest designers like Chanel, Dolce & Gabbana and more.

Article Source: http://www.articlesbase.com/technology-articles/the-oakley-razrwire-sunglasses-59513.html

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The recent boom and the extreme popularity obtained for outdoor sports activities like mountain biking, snowshoeing, rock climbing, skiing, kayaking, golfing and in-line skating has motivated the sun glass manufacturers to design performance-oriented sunglasses.

To meet the demands of the casual and competitive sportsperson, much study and growth has been done by the sun wear manufacturers as to how they could create the best sunglasses for various activities, requirements and environments. The results: lightweight, flexible and durable materials, no-slip components that do not fail in the heat of the moment, and of course lenses were introduced.

Lenses

Lenses, perhaps the main significant aspect effective for sports sun wear has optical quality and image enhancement. These lenses are now accessible in many colors such as brown, green, gray, yellow, orange, etc� that are chiefly effective in certain situations.

Polycarbonate lenses are tremendously popular for its super muscular and impact-resistant quality that particularly attracts many people involved in sports.

Polarized lenses are also in great demand as they decrease glare produced on smooth surfaces such as water or a field of snow. Polarized lenses are highly effective sports lenses that work effectively with both the contradictory sports activities like the downhill to mogul skiing.

Glass lenses have great visual quality. Hence they are used as casual sunglasses and for golfing. Even though glass lenses have such great visual quality they are rarely used as sports eyewear because many people concerned in extreme sports shy away from glasses lenses for the possibility of shattering upon impact.

What’s Your Sport?

One major trend that has hit the sports eyewear arena lately is sports-specific sun wear. Frames and lenses are now accessible that are targeted exclusively to the golfer, the cyclist, the boater, the rock climber and so on. This accessibility and specialization has fashioned great consumer interest and hence has increased sales in sports eyewear.

If you are the Jack of all sports, there is also a selection of multipurpose sports sunglasses available for you in the market. Changeable lens systems are also obtainable.

Another tendency in sports eyewear that has made consumers much more conscious of the brands and the products out there are the product endorsements and sponsorships by well-known professional athletes. Kobe Bryant of the Los Angeles Lakers, John McEnroe of pro tennis fame, PGA golfer David Ledbetter, Missy Giove, a top mountain biker, pro surfer Laird Hamilton, and even Olympic skier Johnny Moseley all have support deals with chief sports eyewear lines.

About Author:

Rejina Kelis is an expert in describing the sunglass products and its original performances. For more information on how to get real sunglass products and its details, visit http://www.safevision.net.

This article is free for republishing
Source: http://www.articlealley.com/article_60955_32.html

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