How to Tell if Sunglasses Are Polarized

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Three Methods:Testing on a Reflective SurfaceComparing Two Pairs of SunglassesUsing Your Computer ScreenCommunity Q&A

Polarized sunglasses are extremely popular because they reduce glare in addition to shielding your eyes from the sun. However, they can cost more money than regular sunglasses, so you want to be sure you’re getting what you pay for.

You can test the anti-glare technology of polarized sunglasses by looking at a reflective surface, comparing two pairs of sunglasses, or using your computer screen.

1. 1 Find a reflective surface that produces glare when light is shining on it. You could use a reflective tabletop, a mirror, or other shiny, flat surface. Make sure the glare is noticeable even from about 2 to 3 feet (60 to 90 cm) away.^[1]
   • If you need to produce glare, you can turn on overhead lights or shine a flashlight on a reflective surface.
2. 2 Hold your sunglasses about 6 to 8 inches (15 to 20 cm) in front of your eyes. You should be able to view the surface through one of the lenses at a time. Depending on the size of the lenses in your sunglasses, you might need to move them a little closer to your face.
3. 3 Rotate the sunglasses upwards to a 60 degree angle. Your sunglasses should be on an angle at this point, with one of the lenses raised slightly higher than the other. Since sunglasses are polarized in a specific direction, rotating the sunglasses can make the polarization more effective.^[2]
   • Depending on how the glare is hitting the surface, you might have to slightly adjust the angle of the glasses to…

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