How do polarized lenses work?
A complete benefits guide
Polarized lenses work by using a special chemical film that acts like tiny venetian blinds, blocking horizontal light waves that cause glare from surfaces like water, snow, and roads.
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Discover our collection of sunglasses, and note that you can add a polarized treatment to many of our frames.
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How do polarized lenses actually work?
The polarizing filter technology allows only vertically oriented light to pass through while blocking horizontally polarized light that bounces off flat surfaces like water or snow, making your vision clearer and more comfortable outdoors. Think of it as a gatekeeper that's selective about which light waves get through to your eyes. The key difference between polarized and regular tinted sunglasses lies in their filtering approach.
Which activities benefit most from polarized lenses?
OUTDOOR ACTIVITIES
Polarized lenses are especially helpful for outdoor activities like fishing, boating, driving, skiing, and snowboarding. They reduce glare, improve contrast, and help you see more clearly on water, snow, and wet roads.
WATER ACTIVITIES
Water enthusiasts experience remarkable visual improvements with polarized lenses. Fishermen can see beneath the water's surface to spot fish, while boaters enjoy reduced glare from waves. Swimmers gain clearer vision around pools and beaches without the harsh reflections that typically cause squinting.
DRIVING
For driving, polarized lenses reduce glare from wet roads, car hoods, and windshields—particularly helpful during sunrise and sunset when the sun sits low on the horizon.
WINTER SPORTS
Winter sport athletes benefit from enhanced contrast on snow-covered slopes and identify ice patches and terrain changes that would otherwise be hidden by snow glare.
Polarized, tinted or anti-UV: understanding the difference
POLARIZED
Polarized lenses use a filter to block horizontal glare from reflective surfaces like water, snow and roads.
TINTED
Tinted lenses reduce brightness by limiting how much light enters your eyes. The darker the tint, the lower the light transmission.
ANTI-UV
UV protection blocks harmful UVA and UVB rays to help protect your long-term eye health.
While each feature has a different function, it is important to note that all BonLook sunglasses include UV400 protection that blocks 100% of harmful UV rays.
Frequently Asked Questions
Do polarized lenses treat or prevent eye diseases?
Polarized lenses do not treat or prevent eye diseases like cataracts or glaucoma. They reduce glare and eye strain for comfort, but you still need proper UV protection and regular eye exams for eye health.
Do polarized lenses work indoors?
These specialized lenses target outdoor glare from reflective surfaces. Inside, they offer zero benefits and may actually make screens harder to view at certain angles.
How do I choose the right colour polarized lenses for my needs?
Gray polarized lenses are best for true colour vision and general use, while brown or green lenses boost contrast in changing light. BonLook offers expert style and lens consultations to help you pick the best option for your lifestyle.
What is the difference between polarized and regular tinted sunglasses?
Polarized sunglasses use a chemical filter to block glare from reflective surfaces, while regular tinted lenses only reduce overall brightness. Polarized lenses offer better clarity and comfort, especially near water, snow, or roads.
Can polarized lenses protect my eyes from UV rays?
Polarized lenses do not automatically protect against UV rays. Always check for a UV400 rating or 99-100% UVA/UVB protection label to ensure your sunglasses shield your eyes from harmful ultraviolet radiation.
How can I tell if sunglasses are truly polarized?
To check if sunglasses are polarized, look at a reflective surface through the lenses and rotate them. If the glare disappears or changes, the lenses are polarized. BonLook staff can help you verify polarization during your fitting consultation.
