Are all polarized sunglasses the same?
Polarized sunglasses are different to standard sunglasses, they have a special film which blocks glare reflected off surfaces such as roads, water, and snow. One of our most frequently asked questions is “Are all polarized sunglasses the same?” The answer is not simple but in the sense that all polarized lenses block glare then yes. However, there is a difference between a £15 pair of polarized sunglasses and a £70+ pair.
On less expensive polarized sunglasses the polarized film is applied to the front of the lens and through use this can scratch and wear down. This will mean the polarized lens becomes less effective.
On more expensive or premium polarized sunglasses, the polarized film is sandwiched between two other layers meaning it is protected and will not wear out or lose its effectiveness.
There are different lens materials used for polarized lenses. On less expensive polarized sunglasses the lens material most commonly used is TAC which is usually 1mm or 1.2mm thick and should not be used where impact protection is required. On high priced polarized sunglasses, the lens material is likely to be polycarbonate and a polarized polycarbonate lens will provide impact protection.
A few premium models, such as some Serengeti polarized sunglasses, have mineral polarized lenses – these are glass lenses and they have higher optical clarity and innate scratch resistance. Check the product description if you want to know the lens material.
It is both the material of the lens and the method of manufacturing that impacts the price and durability of polarized sunglasses. While lower cost polarized sunglasses will block glare, the film will wear down with use. The more expensive pair of polarized sunglasses won’t lose effectiveness and will be more durable.
Read more about the benefits of polarized sunglasses.