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What you need to know about buying sunglasses online…

Posted on March 11, 2014

Thanks to the man who called me a couple of days ago seeking information about polarised sunglasses that he had purchased elsewhere.... we thought this would be good information to share so that you know what to look for and what to ask about when purchasing sunglasses or prescription sunglasses next. 

Dark lenses do not necessarily mean that the sunglasses will provide you with good eye protection

If the lens does not offer UV protection, then a pair of dark sunglasses is likely to lull you into a false sense of security … you think you have good eye protection, but large amounts of UVA and UVB light will be penetrating the lenses.  In fact, if the lens is dark, your eye will naturally allow increased amounts of UV light in (ironic, isn’t it!).  Over time, you will be causing damage to your eyes.

What damage can UV rays cause to your eyes?

Melanoma can develop as a result of exposure to UV rays, and is one of the leading causes of loss of eyes in Australians.  Other damage that may occur as a result of poor eye protection includes skin cancer of the tissue surrounding the eye, solar keratopathy (cloudiness of the cornea) and pterygiums (overgrowth of tissue onto the cornea). 

How is UV protection rated?

UV light rays are measured in wavelengths up to 400 nanometers. The higher the UV rating number, the better protection you will be giving your eyes.

The highest UV rating for optical lenses is UV400.

Expensive sunglasses don’t always mean the best protection

Price doesn’t always equate to quality.  It’s important to look for lenses that offer UV400 protection (the maximum rating which is slightly higher than the European CE standards of UV380). 

Designer brand frames might look great, but if the lenses are not good quality, the health of your eyes will suffer.

About polarized lenses…

When we see light in ‘normal’ circumstances, it is actually radiating in a number of directions – this can create glare.  A polarized lens has a polarizing filter that aligns the light travelling through it into parallel directions.  This is a great way to reduce glare, and the colors that you see through a polarized lens will be much richer and more vibrant.

Polarized lenses don’t automatically have UV400 protection

However, polarized lenses don’t automatically offer protection from UVA and UVB light.  We recommend that you look for sunglasses that are both polarized and have the maximum UV protection rating of UV400. 

How to test if your sunglasses really are polarized…

The easiest way is to wear your sunglasses whilst looking at a computer monitor – turn your head to the left and right, and if your sunglasses are polarized you will notice that the brightness of the screen changes as you turn your head.  One extreme will be very dark (almost black) and the other will be much brighter.

If you think your ‘polarized’ sunglasses are not polarized…

Often cheap glasses come with all sorts of claims about quality that just don’t stack up.  If you have purchased glasses that are supposed to be polarized, but you think they aren’t, we suggest you return to the store and ask them to provide evidence that the lenses are in fact polarized.  Whilst you are at it, get them to confirm the UV protection rating of your lenses.

Like most products, there are good and bad polarised lenses (we think ours are the good kind, and we're happy to stand by our no fuss returns policy if you don't agree).

What about the sunglass lenses from Naked Specs?

Whether you choose prescription sunglasses, or non-prescription sunglasses from Naked Specs, you will ALWAYS receive UV400 rated polarized lenses.  Click here for more information about our quality materials.

We stand behind our glasses with an easy returns policy...

Our no fuss returns policy and 1 year anti-scratch guarantee will give you peace of mind that purchasing sunglasses online is easy and risk free.

If you have any questions, email our customer care team and we’ll do our best to find the right prescription glasses, sunglasses or prescription glasses online for you!



We recommend that you have your eyes checked by a qualified Optometrist at least once every 2 years.  This information is general in nature and is not intended to replace specialist medical or optometrical advice.

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