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home:lifestyle:light:eye_protection [01.03.2012] – external edit 127.0.0.1 | home:lifestyle:light:eye_protection [08.24.2017] – [Patients experiences] sallieq | ||
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//**Cbay**, CureMyTh1.org// | //**Cbay**, CureMyTh1.org// | ||
- | {{tag>light}} | + | < |
+ | Welding glasses come in various shades denoted by numbers; #3 & #5 seem quite common. Permissible | ||
+ | A few weeks ago I found out that the transmission of visible light for #3s should be 10-15%, and for #5s 1-2%, & reasoned that welding glasses would also have to block UV, IR & blue light - welding arcs are blue-white and hot. But I wasn't able to confirm this. | ||
+ | |||
+ | Today I found these figures from a US manufacturer (Elvex): | ||
+ | UV protection 99.9% | ||
+ | Blue light protection 99.7-99.9% | ||
+ | IR protection 97.5% | ||
+ | Visible light transmission #3: 10%, #5:1.3% | ||
+ | (see http:// | ||
+ | |||
+ | This is significant because: | ||
+ | a) welding glasses may offer equivalent (or only slightly inferior) protection to NoIRs. | ||
+ | b) welding glasses are cheap | ||
+ | c) NoIRs aren't available in China & would be considered expensive here. Lack of suitable/ | ||
+ | |||
+ | I understand that MPers develop varying degrees &/ types of light sensitivity. So until quite a few people have tried welding glasses it'll be difficult to know how well they work for us. | ||
+ | |||
+ | But if you already have eye protection that works for you & feel like trying something different, here are some possibilities: | ||
+ | |||
+ | - Elvex SG25-W3, SG25-W5 (Fitovers? PC mirror/NCB grey lenses offer less complete protection but might be OK for some; see link above) | ||
+ | - Sperian Millenia 1006405 (#3) & 1006406 (#5) (Wraparound style - called Bacou-Dalloz in Europe I think) | ||
+ | - In Europe: Lux Optical Visilux 60405 (#5* fitovers) /Soudlux 60820 (#5) | ||
+ | |||
+ | I plan to try Millenia & Visilux models. If you try any welding glasses & have feedback about how well they work - especially compared to NoIRs (or whatever) - I for one would appreciate it. | ||
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+ | * Visilux 60404 transmits 3-8%, Visilux 60403 transmits 8-18% of visible light. These sound like #4s and #3s respectively, | ||
+ | |||
+ | Ok - for people in the US here are some online stores selling mainly wraparound styles in IR #5 (~2%), #3 (~10%) & #2 (~37%) from $6.15: | ||
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+ | http:// | ||
+ | http:// | ||
+ | https:// | ||
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+ | If anyone finds sources of IR #5 fitovers, &/or links more convenient for people outside the USA please post them. | ||
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+ | Prescription lens wearers could use some Uvex products with a bit of help from an optician. "Rx inserts" | ||
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+ | (If you decide to buy some, please confirm the glasses are " | ||
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+ | * http:// | ||
+ | * http:// | ||
+ | * $19 - see http:// | ||
+ | * http:// | ||
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+ | // | ||
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+ | {{tag> | ||
===== Notes and comments ===== | ===== Notes and comments ===== | ||
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+ | deleted (eg $7.49 for #3s here: http:// | ||
*Legacy content | *Legacy content |