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How Do Polarised Lenses Work?

22 September 2012
How Do Polarised Lenses Work?

Reduce glare and improve vision with Polarise Lenses

Polarised lenses are a popular choice with many glasses wearers. In the past they were most popular with people who took part in outdoors activities, however their popularity has increased in recent years among general wearers. We take a closer look at polarised lenses and how they work.

What are polarised lenses?

Polarised lenses are a type of sunglasses lens that reduce glare and improve vision when outdoors and in bright conditions. People who are sensitive to light may even wear them indoors.

There are many benefits to wearing polarised lenses, which we discuss later on.

How do polarised lenses work?

Polarised lenses work by reducing the amount of bright and intense light that causes irritation to the eyes. Surfaces such as smooth roads and water are generally horizontally polarised, meaning that when light hits them it is scattered in a horizontal direction rather than in all directions like most surfaces. This results in an intense amount of light being reflected off in one area, causing glare.

A filter built into polarised lenses helps to block the intense light, making it easier to see and reducing glare.

When should I wear polarised lenses?

Polarised lenses are best suited to those who take part in sports such as skiing, golf, fishing, cycling and running, or other activities that would benefit from reduced glare. The lenses are also ideal for drivers as glare on roads can be distracting.

When shouldn’t I wear polarised lenses?

Polarised glasses aren’t recommended for everyone. There are times when polarised lenses are not suitable, for example when downhill skiing as they can prevent you from seeing slippery patches of ice.

Polarised lenses can also make it difficult to view LCD screens in some cars and other places where digital screens are used, including ATMs and smartphones.


If you have any questions about polarised lenses, contact your local Toowoomba optometrist who can advise you on the best choice for your lifestyle.

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