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The right blend of sun and shades Most of today's holidaymakers are aware of the importance of sun cream:Slap it on regularly, use at least an spf 15 and reapply after swimming.However, statistics show that many of us don't realise the value of a good pair of sunglasses. Our eyes are not equipped with adequate natural defences to deal with uv radiation.Science proves that prolonged exposure to the sun vastly increases the chance of developing cataracts(A loss of transparency in the lens and the world's most prevalent form of blindness).Macular degeneration, caused by uva light penetrating the cornea, is another major hazard:It is the primary cause of blindness for people over the age of 65 and the risk must be taken seriously.Other potential nasties include cancer of the eye and photokeratisis(Sunburn on the retina, which is exceptionally painful). Children are especially susceptible.They spend more time outdoors than the average adult and their eyes let in more uv radiation.Those who have had laser eye surgery are also vulnerable(It makes eyes more light-Sensitive)As are watersports enthusiasts(Reflected light is intensified light). Wearing a hat just isn't protective enough-You will still be allowing half of the uv radiation to reach your eyes.Instead, look for sunglasses that filter out 100 per cent of both types of uv rays(Or up to 400nm wavelength).Big frames are a better option and Buy UK Cheap Tiffany Earrings wraparounds the ideal choice:They give almost complete protection whereas standard frames will let in about five per cent of uv light.If you're buying for children, choose polycarbonate lenses as they are especially strong and less likely to break. Sunglasses without an adequate uv coating can increase the sun's negative effects.By partially blocking the light, the iris opens to let more light in-And with it more uv rays.Distorted lenses can do even more damage to your vision.A good check for distorted lenses is to cover an eye and hold the sunglasses a short distance from your face, focusing on a surface with repeating lines such as a tiled floor.Slowly move the sunglasses vertically and horizontally;If the lines waver in any way, the lenses are not optical quality. Even if lenses do filter out 100 per cent of uv rays, it is still important that they block 70-90 per cent of light.Apart from causing you to squint through the day, glasses with pale shades may cause irreversible damage to the retina.Remember that if you can see the wearer's eyes relatively easily with the glasses on, they probably aren't dark enough.Boots, for example, sells sunglasses that are ideal for children(Under-Fives)Because they are scratch-Resistant, 100 per cent uv proof and have dark lenses.Price?A mere next sells adult sizes that are filter category three and 100 per cent uv proof for only But cheap isn't always a good idea:Topshop's sunglasses-From around-Could often be better described as fashion accessories because many have very pale lenses(Filter category one)And some offer no indication of the level of uv protection.Street stalls are usually the worst offenders.Aside from flimsy frames, their cheap brand rip-Offs are also likely to have distorted lenses and not be 100 per cent uv proof. At the other end of the scale, don't think that because you are paying or more you're necessarily getting top Tiffany Browse Money Clips quality-You still need to check the uv protection and filter category.If the lenses are category one or two, steer clear-No matter how good they look.

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