Join Date: Sep 2003
Location: Auckland, , New Zealand
OK, this is a real pain for you, but my guess is those people that wear glasses all the time have solved these problems some time ago, so don't despair, a solution will come.
1. Wear light-framed glasses... the heavier they are, the greater the tendency to slip down. When I put on clip ons for sun glasses, the extra weight greatly increases the tendency to slip.
2. Keep the two nose 'pads' scrupulously clean. Clean them before getting on the bike, clean at every stop. To clean, you need something that dissolves oils, like metho or soap/detergent-based cleaner. I would also say, keep lenses scrupulously clean, before starting and every stop if necessary... this will stop you unconsciously altering their position to avoid a bad patch on the lens.
3. Keep the skin where the pads sit very clean, if necessary every stop and before starting. This means clean pads sit on clean skin and it grips really well.
4. Make sure the glasses fit/sit really well so you don't have to keep minutely adjusting by scrunching up your face to alter their position slightly, or push with your finger.
5. Resist the urge to shift them around. Once sitting propoerly, clean pads on clean skin, they can kinda bind slightly, and this holds them in place.
6. Keep ventilation to the face area 'tuned', so you don't have to alter glasses to offset humidity or water getting in... you don't want to touch the glasses.
7. Solve the sun problem... sun direct in can cause you to do all sorts of things, unusual helmet angles, face scrunching, rapid helmet movement... all of these may unseat the glasses. I wear sunnies in good weather (I guess that's pretty unusual over there in blighty :-)). I also have a strip of masking tape across the top of my visor which, while reducing the upper vision slightly, allows me to control the sun totally in about 98% of the cases (slight head tilt and its all blocked out). All helping to stop the effects of sun and flow-on consequences.
8. Make sure glasses don't touch your helmet in the forward part of the glasses. You can't stop them back around the ears because this is one of the pressure points and in fact help hold the glasses steady, but if they touch intermittently forward, this will upset the binding.
I have over analyzed it a bit here and made it sound quite an ordeal, but as all glasses wearers know, most of this is almost subconscious. The worst conditions for glasses - hot, very wet weather when you have been on the bike for hours and lost proper control over the visor fogging... OMG what a pain, I have had to stop just to do a complete cleandown of face, glasses and visor in those conditions.
Anyway, just some thoughts.
Located: Auckland, New Zealand...
but I left my biking heart along the Scenic Byways of America.....
"Come fill the cup that clears
Today of past regrets and future fears." ....Omar Khayyam