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Frame sizing based on wearing eyeglasses.

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Frame sizing based on wearing eyeglasses.

Old 09-19-14, 01:48 PM
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dwinks
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Frame sizing based on wearing eyeglasses.

So I've noticed that I end up with fairly significant neck pain on long rides, and I think it's due to sizing my bike based on arm/leg length and ETT/ST lengths. I'm 5'9.5" with I think 81.5cm PBH, and I've got a 540mm ETT bike that feels too long and the bars are too low.

My wrists are fine for the most part. I wouldn't mind a bit more seat tube angle to help with the wrists, but it's usually not my main point of discomfort. What I end up suffering most while riding is severe neck pain. I've been getting more and more suspicious of it being due to wearing glasses.

As I have to have my head facing mostly forwards to allow me to look through the lenses, I have my neck 'craned' back more than non-eyeglass wearing people. I've tried a ride where I tilted my head down more, looked above the top edge of my glasses/right through the top frame edge (which means I can't really see much as I'm fairly blind), and found that rolling my eyes up rather than bending my neck back results in neither my neck hurting, nor my eyes having any discomfort from being rolled up more than usual.

While I can appreciate the 'aero' aspect of being leaned over more, I'm starting to think that people who have to wear glasses should perhaps look at more upright riding positions.

Does anyone who wears contacts notice being more comfortable with contacts than when they wear glasses, on the same bike?
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Old 09-19-14, 02:46 PM
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I'll leave the answer about contacts to the contact lens wearers.

I wear glasses and have suffered from neck pain. Fixing my neck pain has involved much more than just dealing with my glasses, but they are part of the fix.

You can do a couple of things. First, if you find your eyeglasses sitting low on your nose, you will have to bend your neck further to be able to see forward. I've used "keepers" or whatever people call the straps that are attached to the end of the temples of the frames and can be pulled tight. This keeps glasses higher up on your nose and you don't bend your neck as far.

Second, I often use a pair of prescription aviator-style sunglasses. They have a lot of "height", so even if they slide down slightly I'm still looking through them without lifting my head excessively.

One thing I will say... looking forward through the tops of lenses has taken some getting used to... guess I was better at bending my neck too far than rolling my eyes up far enough.
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Old 09-19-14, 05:15 PM
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Depends on the glasses. Mine are "tall" enough that I can see through them while in the drops.
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Old 09-19-14, 08:41 PM
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Originally Posted by jyl
Depends on the glasses.
Very true.
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Old 09-20-14, 04:48 AM
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Originally Posted by dwinks
Does anyone who wears contacts notice being more comfortable with contacts than when they wear glasses, on the same bike?
I ride with contacts and non-prescription sunglasses and judging from the amount of time I spend peering over the top of the sunglasses frame (which is considerably larger than my regular glasses), riding with my prescription eyeglasses would be a nightmare. If I couldn't wear contacts, I'd at least get a set of large frame prescription cycling glasses with photochromic lenses.
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Old 09-21-14, 07:02 PM
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I also agree that it has a lot to do with the style of glasses. I wear a fairly narrow rectangular frame and I've noticed the same "neck-craning" when wearing my glasses. I recently raised my position a bit for other reasons and found it to make a significant difference to my neck pain. I also ride with contacts and non-rx sunglasses and greatly prefer it, but I can't afford to go though 1-day contacts all the time.
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Old 10-05-14, 10:30 PM
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Originally Posted by dwinks
So I've noticed that I end up with fairly significant neck pain on long rides, and I think it's due to sizing my bike based on arm/leg length and ETT/ST lengths. I'm 5'9.5" with I think 81.5cm PBH, and I've got a 540mm ETT bike that feels too long and the bars are too low.

My wrists are fine for the most part. I wouldn't mind a bit more seat tube angle to help with the wrists, but it's usually not my main point of discomfort. What I end up suffering most while riding is severe neck pain. I've been getting more and more suspicious of it being due to wearing glasses.

As I have to have my head facing mostly forwards to allow me to look through the lenses, I have my neck 'craned' back more than non-eyeglass wearing people. I've tried a ride where I tilted my head down more, looked above the top edge of my glasses/right through the top frame edge (which means I can't really see much as I'm fairly blind), and found that rolling my eyes up rather than bending my neck back results in neither my neck hurting, nor my eyes having any discomfort from being rolled up more than usual.

While I can appreciate the 'aero' aspect of being leaned over more, I'm starting to think that people who have to wear glasses should perhaps look at more upright riding positions.

Does anyone who wears contacts notice being more comfortable with contacts than when they wear glasses, on the same bike?
Sure, same thing happens when wearing some racing sunglasses with a bold top rim. You bike may be too big, but perhaps you can solve the problem in the short term by fully rotating your pelvis foward, I think you'll find your head comes up more easily.
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