FL-41 filter Glasses

jasonpicard stay away they are garbage. They were meant for fluorescent lights. I own a pair. Pretty much did nothing. You feel like death if you wear them in a led environment.

I inquired at Theraspecs. Their answer was

The FL-41 tint is designed to filter the most harmful wavelengths of light for individuals with migraine and photophobia, shown by research to be at and around 480 nm. This is within the blue-green area of the light spectrum, which is very prevalent in LED and fluorescent lighting.

I have not yet tried their glasses (or AxonOptics's) though, because the importing costs a fortune, between shipping and taxes.

degen Oh yeah you get looks. Usually most people are reasonable about it. I just tell them I have crazy issues with LED lights and I get can't tolerate them. Everybody is used to me wearing them now so nothing gets said. I get no migraines or eye pain if I wear them in flicker free led areas. I have to wear a hat though to stop the lighting from coming over head. Hopefully your school has flicker free lights. You will still get pain if not unless your not sensitive to flicker. Good luck! If the school uses CFL though SCT orange doesn't really help because there really isn't enough of a blue spike in those lights.

KM No I do good with my setup. My work lights are flicker free ( I requested those to by talking to my boss) so unless I take my SCT glasses off I'm just fine. Ever since I figured this out I have had no issues with strength or stamina at home with good screens. I'm sure when I came up with the electrical tape on the sides so no light gets in at first people thought I was crazy. I had to explain it to a lot of people but all my bosses don't understand fully but they get it. I even had to explain to a group of 8 higher up guys why I wanted to request flicker free monitors in the shop. I even got thrown on the spot because my boss told me he had no problem doing it but he needed permission from the higher up guys so I got thrown in a meeting about it. Now we have all View Sonic gaming monitors down in the shop. I find that kind of funny because I was only asking for flicker free monitors. I didn't expect them to go all out. The monitors are less then 200 a piece though so they were going to buy all new monitors for everyone anyways. I find when you explain these things most people don't realize lights and screens are pretty much the same price if you are only talking about flicker so they have no issue with it. It's only when you get involved with those violet chip LED's do things start getting expensive. I saw another one of those violet LED's I believe the company was called Soraa or something like that. The lights are white but it's missing the blue part of the spectrum they were pricey though.

jasonpicard Thanks! So you are saying that Theraspecs or whatever blocks blue light do not help in case of flickering LEDs, but you do still use such glasses in a flicker free LED environment because at 6500 K there is plenty of blue. Hence your conclusion is that you are sensitive to both flicker and blue light. Is that a correct summary of your condition and findings?
The temperature of my light tubes in the office is 3000 K! I hate talking of feelings, but paradoxically I feel low temperature bothers me more. Maybe I should get a higher temperature bulb up on the ceiling and see how it goes. Yesterday I was in the office until night. It took me ages to write an email. I went home, took a break for dinner, sat under my fluorescent overhead light at home and I was much more performant. That light is clearly more blueish. How come if blue is evil?

AGI I use SCT orange. I know Theraspecs are a scam and I'm not a fan of them because I think they are scamming people because they used to market them as blocking wave lengths for CFL. I wore my Theraspecs to my work one day and after 1 minute thought I was going die. They don't block any blue light the way they are claiming. This is not really an issue with CFL because it barely has any blue light compared to LED. SCT orange with black electrical tape on the sides and a ball cap so I block light from all sides. When it comes to light bulbs yeah blue light and flicker are my main problems.

I'm not able to use LED bulbs and monitors without pain even when they're flicker-free (aka very low flicker, as they all do flicker a little) and I wear orange blue-light blocking glasses. I have checked the latter actually block blue by using a handheld spectrometer. I have no idea what's going on actually. This condition is truly disastrous. I have even tried frosted glass in front of the bulbs, while making sure no light could escape from the sides. It did not help at all. I compared online charts of different light spectrums. It seems natural daylight has pretty much all wavelengths at extremely high intensity yet it causes no pain at all. So unless for some obscure reasons the relative wavelength distribution is more important than the absolute intensity I'm not sure if any filter glasses could ever help in any way.

KM unless for some obscure reasons the relative wavelength distribution is more important than the absolute intensity

Yeah, that is what I had thought too, and that is why I am considering the glasses. I do have orange UVEX goggles worth USD 10. They do not help, although I verified with a spectrometer they effectively cut blue and green. The optician says the low quality of those lenses may cause more downsides than benefits, but I have not yet fallen to purchase his Nikon lenses which are over USD 400 inclusive of frame.

I am really desperate and wondering whether it is worth to eventually waste other bucks rather than sit here and do nothing. That for sure is not leading anywhere. To be honest the main reason why I have not yet made the investment though is that the guy showed me a bunch of lens colors from bluish, purple to yellow, but was unable to tell me why one rather than the other. That proves to me that, no offense, he is not competent. "Some people find a certain color more comfortable" is not a satisfying scientific / technical explanation. I won't be allowed to swap lens color if it does not work.

KM I have LED bulbs that flicker just minimally at 100 Hz below 0.1% (almost not measurable) and they still hurt.

Have you tested / compared different temperatures, e.g., 3000 vs 6500 K, and CRIs?

With regard to color temperature:

...the use of warm colour temperatures at high illumination levels yields an unpleasant insipid yellow hue to the surroundings which disturb the feeling of well-being. The matching of the illumination level to the desired colour temperature is a key point that is often overlooked in modern lighting design.

With regard to CRI:
Consider the appearance of people and objects under daylight. They tend to look great, right? Well, the CRI of daylight is around 100. Contrast this to an orange street light, where it’s hard to discern the color of anything. That street light has a CRI close to 0.

Maybe flickering is a red herring, and I am going nuts because of poor CRI and illuminance / color temperature combination?