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Can You Wear Glasses Under a Full Face 3M Respirator? NO!! | Test Shows How Bad It Is.
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- Опубліковано 4 лип 2022
- A question from Twitter: can you wear glasses under a full face respirator? The answer is no, but I wanted to see just how bad the results would be.
The reason you can't wear glasses under a full face respirator is that the mask seals to your face, not to your nose and mouth. The arms of your glasses break the face seal and let the bad air in. It only takes a small leak to completely ruin the safety of your respirator. The PortaCount test shows just how badly wearing glasses under your respirator compromises the air tight seal.
The correct way to wear prescription lenses with a full face respirator is to buy the appropriate prescription lens insert and have new prescription lenses fitted into the insert. This is annoyingly expensive, so it is too bad that you can't wear regular glasses under your full face respirator - but you can't, so don't.
For example, 3M sells a prescription lens insert for the 6800 series respirators:
www.3m.com/3M/...
Different respirators need different inserts.
There are some universal inserts you can buy, like these ones that suction cup to the inside of the mask, but I'd hate to have the suction cup fail while I was wearing the mask and couldn't take it off to re-seat them.
rx-safety.com/...
You could mould a gasket to an old pair of glasses between your face and the mask, use painters tape to help keep things clean and scuff the glasses fit the gasket to stick. Silicone or rubberized polymer, probably should use a fast drying option.
Wow. For those of us who wear glasses with $$$ lenses in them that’s definitely a deal breaker for this full face respirator. Progressive lenses with all the bells and whistles are not cheap (but are worth every penny!) Putting the prescription into safety goggles or a full face respirator is not really an option…. Well maybe if one could fine truly awesome eye goggles which fit a small face with a GVS Elipse riding high on the nose (ie. unlikely)
This is one of the areas where a loose fitting PAPR should help, and allow you to get good protection while still wearing regular glasses. Perhaps the cost savings of not having to get a special glasses insert should be a consideration when calculating the cost of a PAPR compared to a regular negative pressure full face respirator.
I should add wearing glasses to my tests when I test the loose fitting PAPRs like the 3M 300. And I may go back and test the PAPR version of the 6800 to see how much the blower reduces this leakage. Not because I think people should wear glasses under the 6800 if they have a blower, but I was just really surprised by how much the Fit Factor would go down wearing glasses. I knew it would be a leak, but I didn't have any idea just how badly it would affect the score.
@@gerardhughes yes that was a significant leak. Yes adding glasses with tests would be excellent. Even with N95s some are worse for fogging glasses than others. My testing was with a narrow nose in them, their not passing a DIY fit test, and also wearing a TrueHero full coverage face shield so I unwilling became very aware of fogging in certain weather conditions. My consideration re wearing a PAPR (with a white fabric partial head cover) was how I would be perceived by others sadly. Even with the GVS Elipse when the straps were dangling and a full face shield on I got comments. Generally people where I am are decent (don’t say anything) but there was a difference. I have since sewn velcro onto the straps. Another idea is to add loops of narrow elastic (type used in mask making) and attach them to the main ‘in use’ part of the head straps and then insert the dangling ends of the straps into those loops. I may try that on my second GVS Elipse….as time permits.
@@gerardhughes I was considering getting a PAPR but you kindly pointed me in the direction of the GVS Elipse. If I get a 2nd COVID infection I will for sure get a PAPR. Then it will be to heck with what the hecklers say. I will politely bite my tongue in future years when people tell me I am ‘lucky’ I don’t have health problems from COVID….or more likely I will come up with a good retort.
@@swes2934
Sadly, social pressure really does still govern how much we protect ourselves. I have some of the best, most protective respiratory protection in the world, but I've only worn the PAPRs and full face negative pressure respirators for doing projects, not for protection from COVID in public.
I also find that the ability to talk to people easily is a pretty significant factor in which masks I tend to wear. Speech intelligibility is more important to me than I had realized when I first started doing mask fit testing.
@@swes2934
Well, the good news on that front, is that the GVS Elipse really is an excellent, highly protective mask if it fits you well. :-)
If he used thin wire frames instead of "bulky" plastic one it would have passed -- I have done this for years, You need flexible frames that do not interfere with the front glass. He should try it with thin wire frames.
I did, the thin wire frames did not pass either. The video is edited down from the more complete testing that I did during the testing session.
Part of the problem is that even though the wire frames are thin, they are offset from my face, bridging from the edge of the glasses to my ear and the frames are not pressed up against my skin. This creates a tent that allows air to pass under the frames under the mask seal. So it's not as easy as just having wireframed glasses. They would have to fit tightly against your face at the point where the face seal is supposed to seal against your skin. And even then there might still be a leak that would reduce the overall efficacy.
You may have done it for years, but did you run a quantitative test on it? I think it's possible it could pass under the right circumstances. But I'd say it is not something you should advise people to do if they don't have access to fit testing to verify the seal. A leaking mask that you're depending on to protect you from hazardous particulates and orgases could damage your health or even lead to premature death.
@@gerardhughes mine are a tad too small for my face so they press into my skin and pass, but I got custom inserts anyway.
So if you were to wear a half face respirator and goggles would that be better? Also what kind of goggles would you recommend that have that kind of seal?
Wearing OTG ("over the glasses") goggles over your glasses instead of wearing glasses under your full face respirator would be safer, especially from a respiratory safety perspective. Goggles can reduce your exposure to some hazards, but they are not made to be airtight typically because they need to vent so they don't fog up. So how much more protective they are of COVID, I can't really say.
Which one should i buy? A single respirator half face mask or the double one?
Respirators are tools. Which one will be best for you is going to depend on the application, and your preferences.
I tend to wear half masks for COVID. I wear the full face mask, because it has an impact resistant face shield, when I'm doing sanding or other dusty work at home or in the shop.
Im just watching this because i wanted to start painting miniaturewith priner spray paints and choose what mask to get, i think i could wear this with glasses or just get a half mask for my glasses. I guess these masks are more biological protection rathwr than spray painting
@@novaenforcer1563
If you're just paying miniatures, you may not need the same level of eye protection that someone spraying cars does, so splash resistant safety goggles would probably work for you over your glasses without affecting the seal of the respirator over your nose and mouth.
Cartridge respirators are typically for a wide variety of applications. You can choose the cartridge based on what you'll be doing. People doing various types of spray painting typically will choose a cartridge or cartridge combination that filters particulates, as well as organic vapors to filter out both particles and fumes.
@@gerardhughes so for priming spray paint I just need vapor cartridge right
What if I took the arms off my glasses?
As long as you don't interfere with the seal that goes on your face that would be fine. The challenge would be in finding a way to affix the glasses to your face comfortably and securely, because if they fall off inside the mask you'll have to get to a safe area with clean air to remove the mask to fix them.
Prescription lens holders are made for these masks, but they are expensive, and you have to get lenses custom fit to them.
My thought exactly. Armless glasses, aka pince-nez (the nose clips are joined with a spring to make them cling to your nose).