The Right Shades for Every Situation

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Now that the 

sun’s rays are shining brighter, what should you look for when it comes to sunglasses? Well, they’re called shades for a reason. 

Pick a pair that blocks 99 to 100 percent of UVA and UVB rays, absorbs UV up to 400 nanometers, or meets American National Standards Institute UV requirements, says Lee Duffner, M.D., an ophthalmologist in Hollywood, Florida. 

Then test lens quality: Close one eye and move the shades from your forehead to your face. Repeat with the other eye closed. Do objects shift? “The movement should be minimal and in the same vertical direction in each lens,” says Fraser C. Horn, O.D., an associate dean at Pacific University College of Optometry. 

If you’re ready to upgrade your shades, here’s what you need to commute, compete, or kick back.

Everyday
Choose glass lenses for your main frames. Glass offers the best optical quality to help you avoid eyestrain. You also want a gray tint (for undistorted colors) and polarization (to block glare). For casual wear, metal frames are best because they’re durable, says Dr. Duffner. Try the Ray-Ban RB3025 Aviator Large Metal sunglasses; they suit all face shapes.

Sports
You want lenses that are made of strong yet lightweight polycarbonate; make sure they’re interchangeable so you can swap in sport-specific tints. For example, the red lenses in theRudy Project Rydon add contrast against green surfaces, which is good for mountain biking and tennis. And check that the frames have nose grips, so they stay put.

Driving
Go with yellow-tinted, polarized glass lenses, like those on theSmith Optics Chief. They let in enough light that you aren’t driving blind if the sky clouds up, says Dr. Duffner. In an Australian study, drivers with yellow shades had faster reaction times than those with neutral ones.


Credit: http://www.menshealth.com