Below are the main differences between polarized and non-polarized lenses, and the benefits of buying polarized sunglasses
- UV protection – A vital reality most people are unaware of is the fact that when using sunglasses, the pupil widens. Consequently, allowing UV rays to enter the eyes easier. If a lens offers poor UV protection, sun rays may damage the eyes permanently causing macular degeneration which leads to vision loss and cataracts. However, if you purchase polarized lenses, this is one risk you will never have to worry about because they offer 100% protection against UVA and UVB rays.
- Another benefit for polarized lenses, is that it offers almost complete protection against the sun’s horizontal glare, making the reflection of the sun almost unnoticeable for a clearer more defined vision. The intensity of the emission of sun waves is much higher than the scattered ones. Thus, making this kind of light harmful for the eyes and especially for those who are driving. The polarized lenses are used to block this intense light that is reflected from flat surfaces. The reason for this is that polarized sunglasses are made with vertical polarization, while the light reflected by the sun on flat surfaces is horizontally polarized.
- Different to polarized lenses, non polarized lenses have a dark shade and reduce the intensity of light. However, unlike the polarized lenses, they cannot counter the effects of horizontal polarization. These lenses do not take into account the direction in which light is coming.
- If you are someone who’s constantly active under the sun, driving, jogging or simply laying under the sun, polarized sunglasses are definitely the better choice when purchasing new shades!