When choosing sunglasses or sunglass lenses, one of the most common dilemmas is deciding between polarized and non-polarized lenses. Both options offer UV protection, but they have significant differences in terms of visual comfort and specific use cases. At CristalesGafas, we help you decide which is best for you.
What Is the Difference Between Polarized and Non-Polarized Lenses?
The main difference lies in how they manage reflected light. Non-polarized lenses simply reduce the overall amount of light that enters the eye by absorbing a percentage of all light — both direct and reflected. They darken your vision uniformly, which is useful for general protection against bright light.
Polarized lenses, on the other hand, incorporate a special filter that blocks light that vibrates horizontally — which is the light that causes the annoying glare you see when light reflects off flat surfaces such as water, snow, or wet roads. This filter allows only vertically oriented light to pass through, resulting in significantly sharper, more comfortable vision.
When Are Polarized Lenses Better?
- Driving: Polarized lenses eliminate reflections from wet roads and other cars’ windscreens, improving safety and visual comfort while driving.
- Water sports and fishing: They allow you to see through the surface of the water, eliminating the glare that prevents you from seeing clearly. Essential for fishing.
- Skiing and mountain sports: They reduce the intense glare from snow, improving contrast and depth perception.
- Extended outdoor use: Anyone who spends a lot of time outdoors will appreciate the visual comfort that polarized lenses provide.
When Are Non-Polarized Lenses Better?
- Looking at LCD screens: Polarized lenses can make it difficult to read LCD displays such as GPS screens or ATM displays, as they filter out certain wavelengths that these screens emit.
- Pilots: Aircraft instruments often have LCD displays, so non-polarized lenses are recommended for aviation.
- Lower budget: Non-polarized lenses are generally more economical than polarized lenses while still providing good UV protection.
Polarized or Non-Polarized: Our Recommendation
For most everyday activities outdoors, especially near water, snow or while driving, polarized lenses offer a noticeably better visual experience. However, if you need to read screens frequently or have a tighter budget, non-polarized lenses with good UV protection are a perfectly valid option.
At CristalesGafas, we offer both polarized and non-polarized lenses for your sunglasses or prescription sunglasses. Our optometrists can help you choose the best option for your lifestyle.