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Medical Forum / General / Vision / February 2007Anti-mist/fog prescription lenses for eyeglasses?
Hi All, I wear eyeglasses, and this winter I've been having quite some trouble with my lenses getting misted when I ride my motorcycle (wearing an helmet). Is there any kind of lense, or any kind of coating, that would minimise/solve this problem? (I'm using mineral, reduced thickness lenses) Alternatively, is there any product that I can apply to my lenses that would help me? (I know products that can be applied to helmet visors, but these have not helped when applied to my lenses) TIA, jbr Ride your 2 wheels, but in order to ride them yet another day! bbb > Hi All, > [quoted text clipped - 9 lines] > would help me? (I know products that can be applied to helmet visors, > but these have not helped when applied to my lenses) Put a drop of liquid detergent on each CLEAN lens surface and polish it off with a dry cloth or paper towel. This is standard practice for ski goggles, but I have no idea how badly this would scratch your lenses. There's also something called Rain-X for windshields that causes water to sheet off smoothly rather than collect in droplets. There are also commercial anti-fog cloths available, probably through ski shops. I got mine at a yard sale and was happy with it when I was wearing glasses, but contacts + good ski goggles (also yard sale) don't fog at all. I hate full face helmets for just that reason, as well as others. If I were going to go back to serious motorcycling I would strongly consider lasik -- glasses under a helmet suck, and I wouldn't trust NOT getting crud in my eyes with contacts.  SignatureCheers, Bev =================================== New sig on order, watch this space. >Put a drop of liquid detergent on each CLEAN lens surface and polish it >off with a dry cloth or paper towel. This is standard practice for ski I've tried it. It does work for me, or for my lenses... >There's also something called Rain-X for windshields that causes water >to sheet off smoothly rather than collect in droplets. My problem is with fog, in the lenses alone. I can't see how Rain-X would help me. >There are also commercial anti-fog cloths available, probably through >ski shops. I got mine at a yard sale and was happy with it when I was Never saw those for sale - it hardly snows in Portugal :-) Do those have a name, and are they intended at lenses, not just goggles or visors? >I hate full face helmets for just that reason, as well as others. If I I also used too, untill I fell and opened up my chin :-( >lasik -- glasses under a helmet suck, and I wouldn't trust NOT getting If anything else fails, I'll get there. For the time being, I'll looking to alternatives to lasik. (Contacts, is an alternative which I can not use, having already tried them.) Any other ideas, anyone?? Regards, jbr Ride your 2 wheels, but in order to ride them yet another day! bbb >> Put a drop of liquid detergent on each CLEAN lens surface and polish it >> off with a dry cloth or paper towel. This is standard practice for ski > > I've tried it. It does work for me, or for my lenses... I assume you mean "doesn't" here... >> There's also something called Rain-X for windshields that causes water >> to sheet off smoothly rather than collect in droplets. > > My problem is with fog, in the lenses alone. I can't see how Rain-X > would help me. Fog is just *tiny* droplets. >> There are also commercial anti-fog cloths available, probably through >> ski shops. I got mine at a yard sale and was happy with it when I was > > Never saw those for sale - it hardly snows in Portugal :-) Do those > have a name, and are they intended at lenses, not just goggles or > visors? I'm not at home now and can't check the name printed on it, but I'm pretty sure it's snow-sport related. Possibly-useful links below (found by googling "anti-fog cloth"). Perhaps if you email some of these people they can give you a Portuguese source... http://www.motosolutions.com/index2.html http://www.outdoorsuperstore.com/product.asp?prod=307849 http://www.jonescam.tv/catalog/index.php?cPath=22 http://www.amazon.com/Extreme-Rage-22006-Anti-Fog-Cloth/dp/B0009NEP0Y http://www.fullerbrushhome.com/household-/anti-fog-cloth/prod_6.html http://www.psia.org/forum/forums/thread-view.asp?tid=51&posts=5&mid=1193 (Last one is a discussion of the problem, with a number of possible solutions presented. Especially note the second message...) I always intended to try saturating a piece of flannel with slightly-diluted liquid detergent and using it after it dried, but lack current motivation :-( It can't possibly be a secret formula. Perhaps a chemist<ry teacher> would know what the stuff is. >> I hate full face helmets for just that reason, as well as others. If I > > I also used too, untill I fell and opened up my chin :-( I used to do a lot of dirtriding (and falling), but I never hurt my face even though my trusty Bell was NOT full-face. I didn't wear body armor either, and only have a dislocated collarbone to show for it -- and I'm pretty sure armor wouldn't have helped anyway. I've only fallen seriously on the street a couple of times, with no facial damage either time. I did fall off my bicycle and require several stitches in my chin, though. There are no miracles. >> lasik -- glasses under a helmet suck, and I wouldn't trust NOT getting > > If anything else fails, I'll get there. For the time being, I'll > looking to alternatives to lasik. (Contacts, is an alternative which I > can not use, having already tried them.) Contacts are a pain in any sort of wind conditions. I used sunglasses when I skied until a sudden crosswind blew them off center, effectively blinding me. The next week I started wearing goggles. SignatureCheers, Bev =================================== New sig on order, watch this space. >http://www.motosolutions.com/index2.html >http://www.outdoorsuperstore.com/product.asp?prod=307849 [quoted text clipped - 4 lines] >(Last one is a discussion of the problem, with a number of possible >solutions presented. Especially note the second message...) Thank you! jbr Ride your 2 wheels, but in order to ride them yet another day! bbb > Never saw those for sale - it hardly snows in Portugal :-) Maybe not, but ... WOW ... did it RAIN on me in Sintra (and other places)! Sorry. As you were.... >> Never saw those for sale - it hardly snows in Portugal :-) > >Maybe not, but ... WOW ... did it RAIN on me in Sintra (and other places)! I believe you - some years ago I had native French teachers, who said they had never seen in their country rain as they normally did since they moved to Portugal... Regards, jbr Ride your 2 wheels, but in order to ride them yet another day! bbb I assume the term "mineral" is referring to glass. Glass fogs far worse than any of the plastics available. There are treatments that can reduce the issue, but the results are mixed and the believers are religious about their particular method. I know that in diving masks your own spit works as good as the commercial products. I wouldn't do that to glasses , however. Anti-fog cloths and solutions work to a certain extent. The people that live in the bush around Fairbanks, AK tend to buy the cloths like they are going out of style, but the north slope workers tend to dismiss them as ineffective. I attribute that to expectations. I use anti-fog cloths and find the results acceptable for my safety glasses when I'm out in cool temps. (+20F to -20F) I have seen lens coatings that are truly fog free, but they scratch when you look at them wrong and tend to absorb the ink used during the layout procedures required for manufacture. There is a truly excellent for free plastic lens available in Japan, but it doesn't meet the basic US safety standards so the FDA will not allow import into the US. Carl > Hi All, > [quoted text clipped - 15 lines] > Ride your 2 wheels, but in order to ride them yet another day! > bbb >I assume the term "mineral" is referring to glass. Glass fogs far worse than >any of the plastics available. There are treatments that can reduce the Correct, my lenses are made of glass. >There is a truly excellent for free plastic lens available in Japan, but it >doesn't meet the basic US safety standards so the FDA will not allow import >into the US. I'm in Portugal. What's the product, please? Regards, jbr Ride your 2 wheels, but in order to ride them yet another day! bbb The simple solution is to get new glasses. You want plastic lenses with a multicoating with hydrophillic topcoat (lipophillic is good too) Plastic has a lower specific heat than glass, so it takes more energy to heat or cool it. This results in less fogging. Multicoating has a water repellent final coat which is silicon based, like the Rain-off, so it needs no additional stuff added. This works for all of my bikers. dr grant >The simple solution is to get new glasses. Yeap, I guess so. >You want plastic lenses with a multicoating with hydrophillic topcoat >(lipophillic is good too) Never, ever heard of that. Can you remember a brand of lenses that used that on its lenses? Also, is that fairly resistan to wear and washing - the reason why I chose glossa lenses, is that the last plastic lenses I had ended up terribly scratched! >Plastic has a lower specific heat than glass, so it takes more energy >to heat or cool it. This results in less fogging. Multicoating has a >water repellent final coat which is silicon based, like the Rain-off, >so it needs no additional stuff added. Again, never heard of multicoating. does that go by some other name? >This works for all of my bikers. Is that cyclists, or motorcyclist? I don't have any fogging problem when I ride my bycicle, only when I put on my full face, closed visor motocycle helmet. Thanks a lot! jbr Ride your 2 wheels, but in order to ride them yet another day! bbb > >You want plastic lenses with a multicoating with hydrophillic topcoat > >(lipophillic is good too) > > Never, ever heard of that. Can you remember a brand of lenses that > used that on its lenses? Crizal Alize is one, most manufacturers have them. Antireflective coating is another name used. Ask your optician. > Also, is that fairly resistan to wear and washing - the reason why I > chose glossa lenses, is that the last plastic lenses I had ended up > terribly scratched! Multicoated lenses are more scratch resistant than other plastics. My opinion is safe is better than dangerous, so replace them a little more often and enjoy the weight advantage. > >Plastic has a lower specific heat than glass, so it takes more energy > >to heat or cool it. This results in less fogging. Multicoating has a [quoted text clipped - 8 lines] > when I ride my bycicle, only when I put on my full face, closed visor > motocycle helmet. With a bicycle, you get air circulation that removes the water vapour. Under a full faced helmet, tthere is no air flow so water vapour from your tears and skin condenses on the lenses. This is one of the reasons they use polycarbonate (plastic) visors for your helmet. > Thanks a lot! > jbr > > Ride your 2 wheels, but in order to ride them yet another day! > bbb |
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