How to Test Polarized Sunglasses
Polarized sunglasses are great for protecting your eyesight. Polarized sunglasses work to reflect any type of glare that may occur when you are working outside. They are extremely helpful when it comes to outdoor activities such as fishing, driving and boating.
Polarized sunglasses work by filtering the glare that occurs when light shines on different types of surfaces. Polarized sunglasses help to reduce the harmful UV rays that can occur from exposure to the sun. This protects your eyes from any retina damage. Testing these sunglasses for polarization is simple but extremely important when you are buying new polarized sunglasses.
Hold up the pair of sunglasses that you are going to be testing to the light. The light source can be outside or inside; it does not matter what the light source is or where it comes from.
Put a pair of polarized sunglasses in front of the pair that you are going to be testing. One of the lenses from each of the pairs of glasses should be overlapping each other. Look through both of the lenses at the same time.
Rotate one pair of sunglasses until it is at a ninety degree angle to the other pair of polarized sunglasses. Be careful when you look through the lens when you rotate them like this. If both of the pairs of sunglasses are polarized, the light is going to be blocked when you look through the lenses that are overlapping.