High street sunglasses fail British standards 15 out of 21 pairs of sunglasses fail key tests

14 August 2011

Sunglasses

Which? tested 21 pairs of sunglasses from seven high street shops and found that 15 failed key lab tests, breaching the British Standard. 

You might not expect a pair of £5 sunglasses to last forever, but you wouldn't expect a supposed bargain to potentially worsen your eyesight, cause double vision or headaches. 

Too dark for driving

The sunglasses on test were bought from George at Asda, Marks & Spencer, New Look, Poundland, Primark, Sainsbury’s and Tesco. 

All the sunglasses blocked UV rays, but a Poundland pair was mislabelled, leaving a wearer unaware that the lenses were too dark for safe driving.

Although two out of three Primark pairs passed our tests, the one that failed had the wrong prescription level which could make vision problems, such as astigmatism, worse. 

Flying colours for New Look

New Look was the only store where all three pairs passed the Which? tests with flying colours.

Which? health expert Joanna Pearl said: ‘While these problems would not cause long-term vision damage, some of them would be unpleasant for the wearer and could even compromise their safety. Glasses must comply with the British Standard they clearly claim to meet on the label.’ 

Stores to investigate Which? findings

We will be sending the worst results to Trading Standards. Asda, M&S, Primark, Sainsbury’s and Tesco all confirmed that their sunglasses are tested to British Standards. 

M&S, Primark, Sainsbury's and Tesco rigorously disputed Which?’s findings, with M&S expressing their surprise and disappointment. 

Asda, Poundland and Primark will be investigating immediately. 

Tips for buying sunglasses

If you're buying sunglasses make sure you do the following checks:

  • Check for the CE Mark and the British Standard BS EN 1836:2005 for adequate protection against the sun's UV rays.
  • Check the filter category of the glasses (how dark they are) from 1 to 4: category 4 is the darkest and not suitable for driving.
  • Remember that you are buying a pair of glasses. Before buying hold the glasses at arm’s length and look at a window edge through one lens then the other, looking up and down to make sure the image is clear.
  • Check for scratches as they can distort your vision.
  • Manufacturers tend to make sunglasses in three sizes, so try them on to make sure they fit.
  • Tinted lenses in colours such as red and orange can distort colours when you're driving; grey lenses are best for avoiding this, and brown ones are ok too.
Here are our results for each pair we tested and the standards they failed on:
Sunglasses on test
PairBought forFaults
Asda (George) pair 1£4.00Fail. Both lenses were darker in some places than others, letting in different amounts of light across the lens
Asda (George) pair 2£5.00Fail. The left lens was darker in some places than others, letting in different amounts of light; there was a scratch on the right lens. This pair also had a semi-circular ‘imprint’ or undulation in the middle of the left lens which could distort vision.
Asda (George) pair 3£2.50Fail. There was a pit in the left lens, indicating poor surface quality
Marks & Spencer (M&S) pair 1£5.00Fail. Both lenses were darker in some places than others, letting in different amounts of light across the lens
M&S pair 2£5.00Fail. Both lenses were darker in some places than others, letting in different amounts of light across the lens
M&S pair 3£5.00Pass
New Look pair 1£2.00Pass
New Look pair 2£2.00Pass
New Look pair 3£2.99Pass
Poundland pair 1£1.00Fail. This pair failed road use testing as one lens tested as filter category 4, despite being labelled as filter category 3. Filter category 4 means the glasses are too dark for safe driving. This pair also had a vertical prism within the glasses, which could potentially cause double vision or headaches as the eyes sees two images and the muscles try to correct this. The surface quality was low, with surface flaws observed.
Poundland pair 2£1.00Fail. This pair had a vertical prism within the glasses, which could potentially cause double vision or headaches as the eyes sees two images and the muscles try to correct this. The surface quality was low, with surface flaws observed.
Poundland pair 3£1.00Fail. This pair had a vertical prism within the glasses, which could potentially cause double vision or headaches as the eyes sees two images and the muscles try to correct this. The surface quality was low, with surface flaws observed.
Primark pair 1£1.00Pass
Primark pair 2£3.00Pass
Primark pair 3£1.00Fail. The power of the lenses (prescription) is beyond what is allowed by the Standard (and these are meant to be non-prescription lenses). These glasses could make vision problems such as astigmatism worse.
Sainsburys pair 1£4.50Fail. The right lens was darker in some places than others, letting in different amounts of light; there were surface flaws on the lenses.
Sainsburys pair 2£4.50Fail. There were surface flaws on both lenses
Sainsburys pair 3£4.50Fail. The lenses are filter categories 1 and 2 respectively, despite being labelled as category 2, which means that the wearer thinks they are getting more protection than they are in one lens. This pair also had a pit in the left lens, which is a surface quality failure.
Tesco pair 1£5.00Fail. The left lens was darker in some places than others, letting in different amounts of light; there was a scratch on the right lens.
Tesco pair 2£5.00Fail. This pair had lenses with differing darkness (>20% difference in light transmission between the lenses), this means that each lens lets in a different amount of light which could cause altered depth perception. The lenses also had surface flaws.
Tesco pair 3£5.00Fail. This pair had scratches on both lenses.
 

Lower your gas and electricity bills

You can compare energy prices and switch to a new gas and electricity supplier on Which? Switch. People who switched with us between 1 October and 31 December 2013 are predicted to save an average of £234 a year on their bills.

Which? RSS and Twitter news feeds

For daily consumer news, subscribe to the Which? consumer news RSS feed. If you have an older web browser you may need to copy and paste http://www.which.co.uk/feeds/news.xml into your newsreader.

Follow @WhichNews on Twitter for the latest news, or @WhichAction to see how we're campaigning for consumers.

Cookies at Which? We use cookies to help improve our sites. If you continue, we'll assume that you're happy to accept our cookies. Find out more about cookies