The website, Accu-Weather helps you test the index map of ultraviolet rays in your area. A good pair of sunglasses should be able to block a hundred percent of these UV rays and must also absorb the high energy visible rays.
A lot of sunglasses take in ultraviolet saturation to a certain level. Roughly 88% of UV light can be absorbed by CR-39R plastic lenses.
Polycarbonate sunglasses can take in 100%. Non-prescription polarized shades which are normally sold in optical shops take in 100% UV; however they command a higher price. Triacetate which can be found in cheaper sunglasses can only take in 40% UV rays.
Acrylic materials are used for cheaper lenses and can offer partial to full absorbent protection. If you want to be assured of getting UV protection for a hundred percent, buy sunglasses from stores with good reputation.
Your perception of color saturation and brightness can be altered by some sunglasses. A natural density gray colored lens will repeatedly make the colors dark without altering the color perception. The G-15 tint is a combination of green and gray and is exceedingly recommended. This tint is being used by Bausch & Lomb, a known lens manufacturer, for their Ray-Ban sunglasses and is specially designed for pilots.
To sharpen foggy day settings into sharper points, choose the brown polarized lenses as a warm glow is being given off by the brown tint. Polarized lenses outline the light from the flat meridian allowing the light from the upright meridian. They also block the light that reflects and thereby reduces glare. These lenses are a good choice for people who spend a lot of time outdoors. You can always have your sunglasses check by an eye care specialist and any optical stores to check whether your sunglasses are giving you the right protection.
Wearing big hats while doing your daily outside routine like gardening is sure way of blocking the sun out. Nevertheless, wearing shades that give you 100% protection from the UV rays of the sun will give you additional protection.
Sunglasses need not be expensive. They should be able to perform the task assigned to them, which is blocking the UV rays and giving the wearer 100% protection. Not only designer sunglasses have the capacity to fully block the UV rays. In fact, you can find or buy good quality sunglass chips to fit your frames and you get exactly what you need.
Wearing sunglasses is a MUST when being exposed to outdoor light. Make it a habit of yours especially when you are out in the sun. You are doing your eyes a good favor in doing so.
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