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***nurse*** · 05-21-2008, 02:57 AM

[SIZE=4] In recent years scientists have discovered that the sun’s UV rays can be very harmful to our eyes. Indeed, UV light can apparently increase the risk of developing macular degeneration and cataracts. This is because ultraviolet light can damage your eye’s retina and cornea. As good quality sunglasses block out UV light it is recommended that you wear them when it is sunny.[/SIZE]
According to experts, wearing sunglasses on sunny days also offers a benefit of improved vision at night. For optimum protection they advise wearing sunglasses that are 100% UV absorbent.
Wearing sunglasses when the sun is shining also has a comfort benefit in that it keeps the bright light out of your eyes thereby helping you to see properly. If too much light enters your eyes the iris closes causing you to squint which can be uncomfortable and does not prevent harmful light coming into your eyes.
For this purpose, choose sunglasses with large lenses and that are sufficiently tinted. Polarised sunglasses also benefit the wearer by cutting down on the sun’s glare so that he or she can see more easily. Polarised lenses work by filtering out reflected light using vertical polarisers that are built into their lenses.
In addition to cutting down on the amount of UV light entering your eyes, a new benefit to wearing sunglasses has recently been discovered.
According to scientists at the Edinburgh Sleep Centre, wearing sunglasses on long plane journeys can actually reduce the effects of jet lag.
The body’s internal clock is affected by light and it seems that by wearing sunglasses on plane journeys, people can help their body clock adjust to new time zones.
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[FONT=Comic Sans MS]AND....
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[FONT=Comic Sans MS] A pair of sunglasses may look very simple -- it's two pieces of dyed glass or plastic in some type of plastic or metal frame. How much more uncomplicated could something get? It turns out that there are few different things you could do with these two pieces of glass, and these things could have a huge outcome on you when you use these lenses. As you would see in this article, there actually is a disparity among the different sunglasses you'll find out there.
There are four things, which a high-quality pair of sunglasses should do for you:
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[FONT=Comic Sans MS]* Sunglasses offers guard from ultraviolet rays during sunlight. Ultraviolet (UV) light damages the cornea as well as the retina. Good sunglasses could eradicate UV rays completely.
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[FONT=Comic Sans MS]* Sunglasses offers guard from powerful light. When the eyes receive extra light, it obviously closes the iris. Once it has closed the iris as much as it could, the subsequently step is squinting. If there is still surplus light, as there could be when sunlight is sparkly off of snow, the result is harm to the retina. Good quality sunglasses could block light incoming the eyes by as much as 97 percent to shun damage.
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[FONT=Comic Sans MS]* Sunglasses offer guard from glare. Certain surfaces, such as water, could be reflecting a grand deal of light, and the bright spots could be disturbing or could conceal objects. Good sunglasses could totally eradicate this type of glare using polarization.
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[FONT=Comic Sans MS]* Sunglasses eradicate particular frequencies of light. Certain frequencies of light could blur vision, and few others could improve contrast. Choosing the right color for your sunglasses lets them work superior in particular situations.
When you purchase a pair of cheap type of sunglasses, you regularly give up all of these advantages and could even make things worse. For example, if your sunglasses provide no UV protection, you increase your disclosure to UV rays. The cheap sunglasses obstruct some of the light, causing your iris to open to permit more light in. This lets in more of the UV light too, increasing the injury UV light could cause to the retina.
So there is surely a difference. Buying the right pair of high-quality sunglasses for the circumstances in which you use them gives you maximum protection and performance.

Thread Info
Thread Subject Health Benefits of Wearing Sunglasses	Thread Replies 0
Thread Author nurse	Thread Views 58

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