Polarized lenses made a revolution in the way lenses where viewed in the lens world. With better protection technology for your vision, polarization of lenses have upped the standard for eye protection. Commonly used for driving, fishing and many other outdoor activities, polarization of lenses is one of the more popular forms of UV protection.
What is a polarized lens?
A lens is categorized as polarized after a special film has been integrated onto the lens that blocks out horizontal rays of light relecting from certain surfaces. When the suns rays enter the atmosphere certain color rays get trapped in it and bounce back from the ground into your vision, due to this it makes it difficult to see during the daytime. When the polarized film on the lenses is applied to the lens it can be applied in many directions for different applications.generally it is placed horisontally for drving and etc. But for an aviatoin situation the polarization may be placed in a different orientation due the the different angles the UV rays may be hitting the lens in a different orientation.
Here is a video we released on how to determine if your lens are polarized or not!
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If you already own a pair of glasses and they fit you well, you could check the ones you have to see a rough idea of the size you are needing or if you saw something in a store you liked, just write down the size if it fit you well.
Usually, the size is written in 3 consecutive numbers, the first 2 numbers are 2 digits and the last a 3 digit number, this is usually on the inside of the temples, like this 58-16-145
All measurements are in millimeters. It only has the numbers on the frames, but it'll be like this 58mm-16mm-145mm
The first number is always the eye size (width of one lens) so the lens size would be 58mm
The second is the bridge (nose part) width, so the bridge would be 16mm
The third is the temple length, this is the total length if it were straighten out, as all glasses are bent near the end to wrap around your ear. So the temple length is 145mm