Sunglasses are no longer just another functional gadget in your possession, but also have now more benefits. Most often, people are stuck between the choices of polarised and non-polarised sunglasses.
So, choosing between them is not just about the price; the question is, are they suitable for your needs? How and where to use them? Whether you are looking to buy sunglasses for men or women, let’s address everything you need to know about polarised vs non-polarised sunglasses.
First, How Glare Works (The Core Problem)
Light usually travels in all directions. However, when it bounces off a flat surface such as water, a road, snow, or a car hood, it is oriented horizontally, resulting in concentrated glare. This glare is harsher than the ordinary brightness of the sun or other sources of light. It can cause eye strain and even temporarily blur your vision in very bright conditions.
What Makes Sunglasses "Polarised"?
Polarised men’s or womens sunglasses have a special chemical filter (you can call it a laminated film) oriented vertically. This works as a Venetian blind for light. In short, it blocks the glare while allowing normal scattered light through. So, it comes as not just a dimmer light but also reduced glare.
How to test if a lens is truly polarised:
When you hold two pairs of polarised designer sunglasses at a 90-degree angle and look through them, the overlapping lenses will become nearly entirely dark. This is not possible with non-polarised lenses.
When to Use Polarised Sunglasses and Benefits?
So, are polarised sunglasses better for driving?? Yes, and here are some other occasions when they are better:
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Driving: removes dazzling glare from windows, other cars' hoods, and wet roads.
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Water Sports: Fishing and water sports allow you to see below the water's surface by reducing surface glare, which is essential for fishermen to spot fish.
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Snow Sports: lessen harsh glare from the snow without compromising depth perception
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Beach Days: removes harsh reflections from the water and sand
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Outdoor Use: On bright days, general outdoor use considerably lessens eye fatigue.
Benefits of Polarised Sunglasses:
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Sharper, more natural colour contrast
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Reduced eye strain over long periods outdoors
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Better visual comfort, not just darker vision
Non-Polarised Sunglasses: When They're Actually Better
Non-polarised black sunglasses are simply those that darken light uniformly. They reduce overall brightness and don’t filter directional glare.
When to Choose Non-Polarised Sunglasses?
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Snowboarding: Polarised lenses can actually make it more difficult to discern between safe snow and icy patches when skiing or snowboarding on icy slopes (both appear similar in contrast), which is a serious safety concern.
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Flying and Aviation: GPS screens and LCD instrument panels use polarised light; at certain angles, polarised lenses can cause these screens to appear distorted or go dark. The majority of aviation authorities advise pilots to be non-polarised.
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Scrolling Through Phone: Polarised lenses can produce rainbow-like distortions on LCD screens when viewing a phone, tablet, or computer, making them more difficult to read outdoors.
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Budget-Conscious General Use: Non-polarised lenses work well for casual, daily wear, where glare isn't a big problem for a fraction of the price.
A Common Misconception: Polarisation ≠ UV Protection
It's crucial to understand that polarisation doesn't provide UV protection. In fact, a low-cost polarised lens without UV coating could actually be worse for your eyes than wearing no sunglasses at all, because the dark tint makes your pupils widen, allowing more UV light in. So, always ensure that your sunglasses, whether they're polarised or not, guarantee 100% UV400 protection (which blocks wavelengths up to 400nm).
Lens Colour Also Matters
The colour of your sunglasses' lenses really plays a role in how well they perform, whether or not they're polarised.
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Grey/Neutral: they cut down on brightness without messing with the colours; ideal for driving and everyday use.
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Brown/Amber: boosts contrast; perfect for activities like fishing, hiking, and when the light's changing.
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Green: offers decent colour accuracy while also enhancing contrast a bit
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Yellow/Orange: improves contrast in dim lighting; a favourite for skiing and cycling.
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Mirrored Coatings: these reflect extra light, making them awesome for super bright conditions; just keep in mind they're a surface treatment, not tied to polarisation.
Other than this, be wary of choosing sunglasses for your face shape.
So, Which Should You Buy?
Go Polarised If You:
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If you often find yourself near water, driving, or in snowy conditions
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If bright days usually cause you eye strain or headaches
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If you’re looking for optimal visual clarity while outdoors.
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If you drive frequently, particularly on slippery roads.
Go Non-Polarised If You:
If you fit into any of these categories:
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You're a pilot or often work with LCD instrument panels.
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You mainly wear sunglasses for casual or stylish purposes.
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You're trying to save some money and don't encounter a lot of glare.
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You hit the slopes on icy days often.
Conclusion
Choosing between polarised and non-polarised sunglasses ultimately depends on your lifestyle and the environments you frequent. Polarised lenses are ideal for driving, water, and snow activities, reducing glare and eye strain. Non-polarised sunglasses work well for casual use, fashion, or situations involving LCD screens. Always ensure your sunglasses offer 100% UV protection.
For premium options, visit iframes, a leading sunglasses store in Australia that offers designer sunglasses online worldwide, including Bvlgari and Burberry. Whether you prioritise style or performance, iframes makes it easy to find high-quality sunglasses that fit your needs and look great wherever you go.
FAQs
1. What is the difference between polarised and non-polarised sunglasses?
Polarised sunglasses reduce glare from reflective surfaces, while non-polarised lenses only darken light uniformly. Polarisation does not automatically include UV protection, so check the coating.
2. Are polarised sunglasses worth buying for everyday use?
Yes, if you experience glare from roads, water, or snow. They improve comfort and clarity, but casual daily use may not always require them.
3. Do non-polarised sunglasses protect your eyes from UV rays?
Only if they have a UV400 coating. Non-polarised lenses block brightness, but without proper UV protection, harmful rays can still reach your eyes.
