I know I am not the only one out there. My spouse also complains. I've had glasses slip off their lanyard, catch on things and pull off, several times in a day. I've lost lanyards and broken many pair of glasses due to slipping. But seems I am stuck with a lifestyle of wearing lanyards.
Solution: Here is a simple, easy, almost free fix that has worked for four months. No more lost or broken reading glasses without a good reason.
The fix would still be working... but I finally crushed the glasses and broke an ear off while carrying a heavy watermelon last week. ( Arrgh again! Over the next few days the eyeglasses constantly slipped their lanyard again -- several times per day. I'd forgotten how much of an annoyance that could be. )
So, while repeating the fix on the new pair of glasses, I took photos...
Step 1: Materials
Electrical Tape and Scissors
Standard narrower electrical tape is fine -- this wider roll just happened to be convenient and saved a trip to the Electronics cabinet.
[ You can see I now have a really nice lanyard. It's leather with silver fittings, bought from a leather worker on Esky.com as a treat at Christmas time. Got tired of the cheap ones, and I've had a lot of those since my eyesight started failing. The cheap ones slipped, too, but this fancy lanyard has larger super -slippery O-rings. It seemed to slip even worse. One of the solutions I considered was hunting down some O-rings of a rougher texture that would grab the glasses and fittings better. This fix with electrical tape has worked so well, there's no need to go to the trouble. ]
Step 2: Cut Strips of Tape
The width is a personal decision. My strips are about 3/8" wide and about 3" long. I got 4 strips out of this wider tape.
[ Since I had the wider tape out and this fix has been so successful, I decided to go ahead and fix a second pair this time, in advance. You can see I cut 4 strips. ]
Step 3: Wrap the Tape Around Each Ear
Your glasses may need a different sized "grommet" or in a different location. It's easy to play with it and thicken it with more tape if you need more. I was lucky first time. After a few days of watching my success, my spouse tried it on his eyeglasses, too, which had a wider flat plastic ear, and it's worked fine for those.
Step 4: Double Up While You're at It
(We had gotten so used to losing reading glasses when they slipped off their lanyard, we started buying multiple pairs of different magnifications and keeping them in the cabinet. Using only one pair of glasses in four months is a nice change. But I went ahead and did up a second pair anyway while I had tape out, and put them back in the cabinet for future need. )
Step 5: Results -- No More Slipping Lanyards
The tape has not been heat sensitive or slipped. They've been doused with water when I washed the glasses. The "grommets" are as good as new, even on the pair I broke with a watermelon.
I had considered using other materials and methods like nesting some heat shrink tubing if this worked -- something more permanent -- but why bother? This was free and simple.