Third EyeEyeglass Bicycle Mirror

I had one of these about 20 years ago, and it did good service, but eventually it broke, as you might expect from a slender plastic stem. So it was great to find they're still available. The Third Eye EYEglass Mirror suits me perfectly. I've always thought that a mirror mounted on the bike would be too susceptible to vibration, but attached to my specs, the tiny glass mirror gives an excellent view of what's coming up behind you without having to turn round. It takes a little getting used to, but if you're a specs wearer using varifocal lenses, you'll be familiar with moving your head up and down subtly until you find the "sweet spot" for whatever you happen to be looking at. It's the same kind of thing with the mirror.From the author of:  The A to Z Guide for Lightweight Travellers

Rubbish. Cheap, poorly made. Waste of money.

Although the mirror is usable and gives a reasonable view behind when cycling, It is only suitable for spectacles that have quite thin legs and it is altogether too fragile.

I've had two of these (the first lasted over ten years) and I find it the best mirror for cycling. It is small, but it doesn't get moved around by vibration like a handlebar mirror. You can cover the whole scene behind you by moving your head around. And you only need one if you've two bikes. If necessary, you can clip it to your glasses using a cable tie.Remember to look behind too, though!

Essential for cycling on the road. Of five mirror systems I have used this has been one of the best. Leave it in position on glasses with thick arms or the plastic will fatigue and break. Mine failed at 375 days!

Only had it a few days - works a treat, good visibility as long as you're not too low on the handlebars. It's light, and needs to be, but not sure how strong. Time will tell!

I have tried several rear view mirrors and this is by far the best. The two joints do have a live span but I can live with that as it is so convenient.

Does the job!

I'm an experienced cyclist and have been using these for about 15 years. I've logged tens of thousands of miles wearing them. I never ride without them and feel completely naked with them when on the bike - the same way you'd feel if you had no rearview mirrors in your car. Yet most of the experienced cyclists I've known (and I've known many) don't use them. I don't understand it. I've probably bought a dozen pairs over the years. I recommend (and give) pairs of these to friends. They are durable but can break usually because you repeatedly drop your glasses with them connected, or you put them on glasses with too fat stems, etc. But they're cheap.I always encourage people to wear a mirror. These are great because they turn with your head, so you can point them to where you want to look. They don't fit all glasses, and fit some better than others. If they're loose, just tape them to the stem of your glasses. I usually do tape them because I don't want them moving around.Please give yourself 2-3 weeks to get used to them and don't give up on them before then. Once get you accustomed to riding with them, you'll wonder how you ever rode without them. You can get a quick look behind you before you maneuver around a pothole, take a hit off your water bottle or start to descend a hill. Forget turning your head around to see what's coming. And when you're sixty like me (and even when you're not) you can't always hear the cars coming up on you. With the mirror on a busy road, you can watch the cars coming from behind you like a hawk. I always feel like I have a fighting chance to bail before an inattentive, texting driver hits me.When you're in a group ride and pulling at the front, you can keep an eye on the paceline to make sure you aren't dropping people, to see oncoming cars (and warn the others) and to see when someone in the back pulls over due to a flat. I used to race in triathlons. In a race, you can see if you are dropping your competitors, see if someone is (illegally) drafting you, etc. I used to leave them on for the run phase so I could similarly keep an eye on the competitors behind me.It goes without saying that I heartily recommend these mirrors.

I don't like the weight of eyeglass mirrors, and the helmet mirrors I have tried are either overly obtrusive or they lose their sticking power. I bought this and drilled three little holes into my helmet. It works great that way. It's rock solid and stays right where I need it, without the annoyance of the glasses attachment. Of course, this will probably void all your warranties, and I can't promise that those three little holes won't compromise the integrity of your helmet, but that strikes me as unlikely.

I purchased one of these for my daily dog walks which consists of several longer walks on roads that are usually not too busy but I walk with the traffic so I figured it would be nice to see who is coming without having to turn around. Anyhow I got the mirror and after installing it for the 3rd time on a 3rd set of glasses one of the mounting nubs broke off so I put the mirror on my favorite set of sunglasses and secured it with a zip tie and this worked very well. It took several days to get it dialed in. After a ~weeks I got used to it and I figured it was neat but I suppose it was mostly a novelty so I took it off my glasses and put it away. Though that did not last long because after I put it away I almost immediately found myself looking for it, yes I missed having a rear view mirror! And so back into use it goes and it will stay on those glasses! BTW I recommend using a small zip tie to secure the mirror, as I said one of my 3 nubs broke off after installing it ~3 times. Anyhow the zip tie keeps the mirror perfectly secure so its in the exact same position every time I wear it.

I liked the fact that it did attach to my eye glasses and I could see behind me when I was riding. But I didn't like the way it attached to my eyeglasses. You have to bend the plastic a little each time you attach them. Sure enough, it broke yesterday after five months use. I suppose if you leave them attached to a pair of dedicated riding eye glasses, they would last a lot longer.

I like the compact size of this mirror but find it difficult to position so I can see the road behind me. My glasses have a rather thick side frame (J Cobb) so afixing the mirror to the frame & adjusting the mirror requires a bit of patience. I still haven't been able to adjust it so I can just avert my eyes to see behind me. Instead I have to move my head around to see the road and what's back there. No real problem but I would like it to be as easy as the mirror I had mounted on my helmet that I replaced with this one.