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Do you wear eyeglasses? If so, You really should read this information about transition lenses!

Wearers of prescribed lenses can encounter a dilemma each time the sun shows up. Do they go with their clear prescribed glasses? Doing so puts them at risk of the aging effects brought on by the sun, such as heavy lines and wrinkles caused by squinting. Also, normal prescription glasses supply no UV protection, which could result in serious damage on our eyes over a period of time. So apparently we must have to carry around a set of sunglasses and swap them with our prescription eyeglasses when outside. Is that right?

Luckily for prescription eyeglass wearers, there is a better option. By going with transition lenses, prescription lens wearers can wear the identical pair of eueglasses both inside and outside. When they’re inside the lenses {are|become|stay lighter, and when they go outside they will darken and provide good sun protection.

Transition Eyeglasses, also known as photochromic lenses, are pre coated with chemicals that react to sun light. Transition lenses made of glass have sterling silver chloride or sterling silver halide embedded in the lenses. Plastic transition lenses contain all natural photochromic molecules. The molecules with these compounds are clear and translucent in light which does not contain UV rays. However, as soon as they are exposed to sunlight they quickly change color. The sun rays causes the molecules to change shape, absorbing that light and making the glasses to become darker in color. When the UV light is removed, the molecules revert back to their previous state and the sunglasses become crystal clear again.

This darkening process happens fairly quickly. Transition eyeglasses become dark inside one minute, though they continue to darken slightly for another fifteen minutes until the sunglasses reach their darkest condition. The reverse process is alittle slow. Most transition sunglasses are much lighter within 2 minutes of being removed from UV Light and the lenses are almost completely clear within 5 minutes. However, the clearing process at times may take up to 15 minutes for the eyeglasses to reach their most translucent state.

The stronger the Ultra violet rays, the darker the lenses may become. This means that effect will not always be consistent. It will depend on the time of day and the strength of the sunlight.

Transition lenses do not darken without the presence of UV rays. UV rays don’t enter our cars because they are deflected by the windshield. Which means transition eyeglasses don’t protect a driver’s eyes from sunlight. In a car, transition lenses always remain a lighter color due to the absence of UV rays.

However, transition lenses are not just for prescription lens wearers. Sports people who would like optimal protection from their sunglasses may consider investing in a pair of sunglasseswith photochromic attributes. These sunglasses definitelyhave darkened lenses which become much darker when the sunlight hits them. Because these lenses never become lighter, they should only be worn outside.

Because the chemical compounds contained in transition lenses work to filter out UV light, transition lenses provide 100% UV protection.

To learn more consult with your local Optometrist!

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