NigC said:This was goning to be my next question (it's true).
I wear contacts and it's a complete nightmare when something gets in your eye, but I've always been a bit concerned about glasses/goggles misting up, so haven't yet given them a try.
But it sounds like a lot of you are wearing some form of eye protection withour any roblems, so I'm going to invest in them the next time I'm near the bike shop
There can be a problem, but it is easily sorted.
There are lots of hints and tips on how to prevent this. The most common is Fairy Liquid, but the salts can damage coatings and cause fine scratches.
There are commercial sprays - most motorcycle shops will stock or advise.
As with helmets though...
Buy the best you can afford, with regard to lens type and material
Buy a wider pair of "wrap around" if you can to increase protection
Make sure they fit and are comfortable
Finally (and this will probably be deemed "anti-glasses")
Make sure they will not cause injury if you are involved in a fall. There is evidence that the material can be a factor in injury. Polycarbonate lens material is better than glass which can cause penetrating shards. Additionally the glasses design is important, glasses frames should be able to distort and misshape on impact, stiff and rigid frames can cause injury.
Some reports even suggest you should not wear "normal" glasses for sports activities for this reason, and where possible properly designed "sports" glasses should be used in preference.
interstingly the "Unite for sight" organisation takes this furher and states that:
The 2 types of eyewear that are NOT satisfactory for eye-injury risk sports include:
1. Fashionable spectacles, eyeglasses, and sunglasses
2. Safety eyewear that conforms to the requirements of ANSI standard Z87.1,which is mandated by the Occupational Safety and Health Administration for industrial and educational safety eyewear.
So the best advice is dedicated sports glasses where practicable, not normal eyewear, fashion or "normal' glasses or industrial safety glasses.
Also if you can get interchangeable lenses as this is more adaptable on long rides where the weather can change. Top of the range can even offer interchangeable photo-chromatic lenses.