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Adaptive Cycling: Handcycles, Amputee Adaptation, Visual Impairment, and Other Needs Have a need for adaptive equipment to ride to compensate for a disability or loss of limb or function? This area is for discussion among those of us in the cycling world that are coming back from traumatic circumstances and tell the world, "No, you are not going to beat me down!"

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Old 05-09-16, 08:58 AM   #1
Lively or Not
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left-side helmet-mounted mirror when blind in left eye

I need a left-side mirror to see traffic and cyclists passing on my left. I'm looking at all options including bar-mounted mirrors - so I'd like to bypass the bar-vs.-helmet mount debate.

I'd like to try a helmet-mounted mirror for the left, but am blind in my left eye. I'm pretty sure most helmet-mounted mirrors won't work for me because they don't extend far enough forward to create a useful reflection angle for my right eye. Is anyone aware of helmet mirrors with longer-than-normal forward extension?
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Old 05-10-16, 09:31 PM   #2
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I don't think a helmet mirror will work for you. Although the mirror can be mounted on the right side, it won't show what's to your immediate left. To se your immediate left you'd need a left handlebar mirror.

To see far back I use the Bike-Eye mirror and turn my head for my immediate left. Bike-Eye - Now selling internationally as well as the UK!
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Old 06-03-16, 07:53 AM   #3
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Ihave an RVO (Retinal Vein Occlusion) in my left eye and had to give up on my glasses mounted mirror. I'm not blind in my left eye but my vision is similar to looking through an automobile windshield while it's raining without windshield wipers.

I now use a Mirrycle mirror that mounts to my left brake hood.



I can use my right eye and see quite well. As in the photo, it's mounted on the left side brake.
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Old 06-04-16, 09:09 AM   #4
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Safe-zone Mirror .. its big enough to be on the left, traffic side of the helmet, but able to be seen from your right eye...

EVT | Safe Zone Mirror

So the exception to your 'Most won't'
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Old 06-04-16, 04:43 PM   #5
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The Take-A-Look eyeglass-mounted mirror comes in both short and long lengths -- I've been using the long length version (mounted on the left earpiece), which extends 4" (10cm) in front of my eyeglasses... not far enough (I just checked) to see what's behind me with my left eye closed... but another 2"-3" longer, and it would. You might consider contacting the manufacturer (a "mom-and-pop" operation, in Greeley, CO -- (970) 339-BIKE; I've spoken/dealt with them directly in the past, and they were very approachable).

Knowing what doesn't work is as important as finding what does. Good luck!
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Old 06-04-16, 05:05 PM   #6
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I have a Take-a-look mirror, the shorter version. I always ride with it. If I'm riding the local bike share bikes without my riding glasses, I really miss the rear view.

I don't actually see all that much when my head is in a normal riding position, and if I have a jacket, then half the view is blocked by folds in the jacket. I have to hold my head just right to see straight back as I'm riding.

Instead, I turn my head slightly to sweep the view behind me. Just a slight head turn, maybe 10 or 15 degrees, pans the view from way off the left side of the road behind to way off the right. It's fast and I do it without thinking now. (Some years ago, I was walking down the hall at work, heard an odd noise behind, and instinctively turned my head slightly to scan with my non-existent mirror.)

A glasses mounted mirror gives you a narrow, but full sized view. A bar mounted mirror has to be convex to have any coverage, so everything is small, like a right side car mirror.

So, with a right side glasses mirror, you should be able to see the lane behind you with little or no head movement, and a quick head shift to see everything behind.

Field of view
I just went outside and tested my field of view. The shorter mirror should give a wider field of view, since the mirror is closer to my eye. But where I have it positioned, the outside portion is way at the edge of my vision, not as in focus and a strain to see. On the inward side, I see the edge of my ear.

The usable width is about 1.5 to 2 fists held out at arms length. Or a fist + thumb held out. Not all that wide. But very usable with small head movements.

~~~~~

Mirror usage
If I'm in the drops, my view is mostly blocked anyway, unless I lift from my normal head position. On the hoods, with some effort, I can keep continuously monitoring the rear view, but it's not easy.

I'm in the habit of checking periodically to evaluate traffic behind me. Less often on quiet roads, more in busier traffic. I occasionally get startled by cars with very quiet tires if there's lots of wind noise in my ears, and I haven't been looking back much. Even with a full view style mirror with the road always in view, the rider needs to focus attention there, just like when driving, so it's not a continuous view anyway.

I'll stay in the lane's right tire track as much as possible, for less debris on the road, and no chewed up road edges. When there are cars approaching in the opposite direction, I glance back to make sure there's nothing coming up on me from the back--I try to manage the situation where the two cars pass each other right near me. So I'll either take the lane aggressively or get way over on the shoulder (if any). But usually, no cars are close behind, so I can just keep riding.

Mirrors are so nice for dealing with left turns. I can switch lanes in between groups of cars, watch that cars are slowing correctly, and make the turn smoothly.

I sometimes lead group rides, so a mirror makes keeping track of the riders behind me easy. I can even see riders still far back on a 90 degree side road before their turn. So you should be able to keep track of riders approaching on your left, using a right side mirror, until they are just a bike length or two away.

One downside of a mirror is watching those occasional "last second" drivers. They stay on a collision course in my lane until about 2 seconds from impact, then move over to pass. Grrr. They probably zoom up on cars and brake, then tailgate too. Perhaps it's better not to see?

~~~~~~~~~~~~~

Supplemental bar end mirror
Perhaps your best choice would be a right side eyeglass mirror, to see clearly way back down the road and off to the sides, and a left side small bar end mirror to keep track of co-riders and nearby cars as they get closer to you.

One of these styles:

Last edited by rm -rf; 06-04-16 at 06:07 PM.
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Old 06-07-16, 05:10 PM   #7
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In the UK if you are blind in one eye you have to have additional mirrors on your vehicle. I use a left eye Safe Zone mirror and its plenty big but I can't see through it with my right eye. What I can do is what an earlier poster does and sweep the view with my left eye so it shows me a fairly panoramic view of what's behind. Still, for a situation where a rider was entirely blind in one eye I would absolutely use a bar (or frame) mounted mirror on the blind side, along with a helmet or eyeglass mirror on the good side. And practice with it until it became natural.

Anytime, everytime, you read a negative review of a helmet or eyeglass mirror you are witnessing the opinion of someone who did not, or could not, give the arrangement a chance(s). Think about a concert pianist and what it takes to do that and then think again about the eyeglass mirror you put in the desk drawer. I'm not judging you. I did it too. I'm glad I gave it a second chance.

As I understand it, the Safe Zone mirror extends fairly easy from stock, because it uses ball lock fittings available at any hardware store. As sold it sits around 4" from your eye. Moved forward a couple of inches it might more easily be seen by the other eye. I haven't tried this yet, but I think about it every now and then because I only have about 30 degrees of view through my left eye.
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Old 07-30-16, 03:29 PM   #8
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Thanks for all the great suggestions and usage tips. I tried a bar-end mirror, and it worked OK, but the plastic ball joint broke after my incessant fiddling and repeatedly putting the mirror side of the bike on the ground. I've reached out to EVT about their Safe Zone mirror to check on adjusting the length.
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Old 07-30-16, 04:09 PM   #9
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I make a custom bracket to mount a standard 3rd Eye Original mirror. It screws onto the helmet visor. I see no reason you couldn't use the same mirror and just make a bracket that extends forward. If you are handy I'd be happy to tell you how I make mine. I see you probably don't have enough posts yet to be able to message me, but quote my message (so I get an E-mail alert) and I will message you and we can talk further.

I make my brackets by cutting and shaping 8 mil aluminum sheet, fiberglassing both sides with fiberglass cloth and epoxy resin, then drilling the bracket and visor for some small screws.

Since the bracket is completely custom, you can fabricate it to put the mirror exactly where you want it.

There is also The Safe Zone mirror from Brett Flemming of Portland's Bike Gallery, It is very large, very long and the mounting to the helmet can be done many ways.

EVT | Safe Zone Mirror

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