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Polarised lenses
Polarised lenses feature a filter that reduces some of the reflected light, particularly that coming from surfaces such as water and tarmac. They can improve comfort when the main issue is reflected glare, but they are not automatically the best choice in every situation.
How is this different from a dark lens?
A dark lens reduces the amount of visible light; a polarising filter, on the other hand, affects light reflected from specific directions. Polarisation, colour, filter category and UV protection are different characteristics: they should be checked on the actual product and not simply inferred from the appearance of the lens.
Where they might be useful
The seaside, driving and outdoor activities are situations in which reflections can be a nuisance. However, the benefit depends on the light, the surface being viewed and the orientation of the lens. Some displays may appear darker or vary in readability depending on the viewing angle: this, too, should be taken into account in everyday use.
Sport and variable lighting
In sport, polarisation is an option, not a rule. For some activities, rapid changes in light, contrast or the ability to read the terrain are more important; lenses may therefore be more suitable photochromic, selective tints or a traditional sunglasses lens. Find out more about this topic sports lenses.
Even graduated ones, where compatible
Many Polarised lenses can be made to order. Whether this is possible depends on the frame size, material, curvature and frame style; for wide or wraparound frames, the Behavioural Centring It helps to ensure that the design is consistent with the actual position of the spectacle.
How to choose without oversimplifying
Let’s start with real-world use and compare reflections, brightness, colours, compatibility with different screens and the need for dimming. The guide on sunglasses explains the categories and technologies; the article Sports eyewear: sunglasses, prescription glasses and lenses for everyday use brings the comparison to various outdoor settings.
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The information on this page is provided for information purposes only and relates to the optical and commercial sectors. It does not contain any medical, clinical or diagnostic content.