Every season, sunglasses manufacturers add new designs to
cater to the needs of people, the sales charts also go up. But is it sufficient
for us to make a dash for the glares? The main feature i.e. —filtering of
ultraviolet rays or UV is as important as the style.
UV exposure can lead to cataract which means clouding of the
natural lens. If UV radiation is not checked then it can easily damage the retina—major
cause for blindness.
How glare can inhibit UV rays, you may ask. The surface of
the lens is chemically coated which filters out harmful UV rays.
The best way to check for UV protection is to go in for
branded glares. They are value for money.
Apart from UV filters, one should also check the lenses for:
Close fitting and wide enough to
cover the eye and its surrounding area.
Light coloured lenses are equally
safe to prevent UV rays as the darker ones.
If you are an outdoors person—
always driving, boating or fishing, then try polarised lenses. These are useful in minimising the sun’s
reflection from smooth surfaces like pavement and water.
Clarity. Often people go in for cheap
glares which might have slight power and are distorted. This can fatigue the
eyes. You can check for distortion by turning your head looking at a pole/tree.
If the pole wavers, it means there is a slight distortion.
A thin metallic coating reduces the
light entering your eyes but it cannot protect fully against UV rays.
Children are the most vulnerable
group where UV rays are the strongest.
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