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Some important medical facts about kids and the sun damage to the eye are cumulative, increasing from year to year. So, the earlier children start protecting their eyes, the better. How much light the lens absorbs depends on its darkness. A mirrored coating on the lens is helpful in reducing the amount of glare caused by reflection. This now leads us to the question of how much light sunglasses should absorb. Overall, of course, this depends on how and where one is going to use the sunglasses. For fashion wear; may provide some protection for around town wear; not very helpful on beach or ski slopes. The ozone layer: the disappearing shield the upper layer of the earth''s atmosphere is often called the "ozone layer." this layer is the critical www.watchstation.com barrier guarding the earth from harmful uv light. Many believe that certain man-made chemicals have seriously depleted the ozone layer resulting in an increase in the amount of uv radiation reaching the earth.

The eye can only see white flashes, such as, light reflecting off car bumpers on a sunny day. It is so intense that it overwhelms the eye with blinding light, masking what is behind the www.watchstation.com glare. It can seriously impair vision and create dangerous situations when driving, www.watchstation.com boating, or skiing. Long-term, it causes excessive wear and fatigue on the eyes. Your eyes we expect a lot from our eyes. www.watchstation.com and www.watchstation.com During a normal day, the eyes will use about the same amount of energy as the legs would use in walking fifty miles. This and the additional burden of glare cause the eyes to strain to see well. Wearing sunglasses will reduce or eliminate this strain, cut the impact of harsh glare and eliminate www.watchstation.com the need to squint. Sunglasses also offer protection against something very serious - ultraviolet radiation (uv). Visual acuity, contrast, and overall sensitivity can be reduced by up to 50%, due to the sun’s sustained bleaching of the photochemical rhodopsin in the rods of the retina.

Look here - Click here to go to our online catalog of watches. We have the best selection of brand name watches and accessories.

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