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  • Are there eyeglasses to reduce LED light strain?

nostrain
you can try prescription polarized glasses at an angle of 90 degree polarization instead of off the shelf 0 degree

or a pair of low minus lenses (-0.25)

oakley prizm low light has a violet filter that removes the excessive yellow-orange light from led

    nostrain LED light strain is unbearable. It seems LED light from any source (LED light bulbs, LED screens etc) is causing unprecedented strain compared to other light sources like incandescent light bulbs.

    Since these can be everywhere like in working places, is there a way to protect from them? Are there any eyeglass lenses etc for protection?

    I agree, led light is like the plague nowadays, I mean its fine for thing like tiny indicators on electronics but not for general lighting, perhaps with the exceptions of places that you don't spend a lot of time, and where quality of light does not matter, like parking lots. What you can do is either wear slightly tinted yellow glasses, or limit your exposure to led displays, switching to incandescent backlit displays or e-ink.

      Yes. You dont need tinted or polarized. You need "blue light" filter glasses. They dont change the color of what you see and everything is as it should be and readable. When you look at the reflection from them you see that they reflect the blue to violet colors. "blue light" is somewhat misleading though. I think powerful LEDs emit too much UV and this is what leads to headaches. The glasses block the UV too but we cant see that in the reflection. They dont need to be expensive to work either. If you see the purple reflection in them they are ok. They help with bright LED lights, bright LED car lights, LED monitors…

      Be careful not to get dioptric glasses if you dont need them. Some gaming glasses may include some by default.

        iliyanz Uh tinted glasses are proven to help against LEDs, especially with preventing migraines. If blue light blocking glasses arent visibly orange or red they arent going to noticeably block blue light at all. Those coatings you see on glasses in reflections are just a gimmick, I have tested them with a spectrometer. I mean even yellow tinted glasses are far better than those lenses claiming that they block blue with no visible color change. The problem with LEDs is that they are emitting high blue light, lack wide color spectrum and they emit very directional light compared to a filament light source which are always comfortable. They also tend to strobe due to using a PWM driver, DC dimmed ones exist but PWM is still everywhere.

        Blue light is a huge problem and the reason most people say its fake is because they rely on their block blocking coatings that are added to their glasses by their optician which dont block blue light at all resulting in no noticeable improvements.

        LEDs often are not emitting UV, they usually are using a blue led with phosphor. Incandescents emit UV and thats very beneficial to our bodies/eyes (prevents myopia progression). Btw not all blue blockers block UV. Its not wise blocking UV as we have natural processes in our body that rely on it. Vitamin D production and also UV entering the eyes helps melanin production. (Not saying to look into the sun)

        Added power to lens can help on the computer +.50-.75 isn't bad.

          You certainly repeat mostly what is written online but it is not all true for everyone.

          I agree that red tinted would block more than yellow tinted which in turn would block more than clear with only "blue light" reflecting. But seeing everything red is not great. I explained already that if you see blue/violet reflections when you look at them from the sides they are doing their job. If they block blue/violet they block UV too. Do you know how hard it would be to block only blue/violet but not UV. Narrow band filters are much harder to create.

          What is the shortest wavelength your spectrometer can detect? Is it only for visible light? Can you tell its model?

          I agree LEDs are terrible and PWM even more so. Incandescent is the natural black body spectrum. Halogen being the perfect mix of natural + efficient + long lasting + cheap. Guess which is hardest to find these days … halogen.

          LED actually emit UV and convert it down to visible using different phosphors. Do they convert 100% of the UV to visible? Someone with a good spectrometer could tell us.

          PWM cant be the only problem. I tested 12 volt LED strips off of a battery … still bad without glasses. Guess what, glasses help me even with PWM. I mean it still bad after a while but there is a difference. I suspect PWM + UV is the worst case. Incandescent vary a little with the mains frequency but we dont have a problem with them.

          There is no natural process in our body that requires us to stare at a UV source (even very low levels of UV) for hours. It adds up.

          Adding power to lens may help if someone needs it but it adds additional distortion same as red/yellow tint. I just say to be careful and only do it if the benefit would outweigh the considerable downsides for the specific person. You talk about studies testing lots of people but we both know that very few of them have the exact same problem like us. I just give you one example where both tint and power make it worse. For me at least. Everyone should test for themselves and this is not expensive to try.

            iliyanz LED actually emit UV

            Not sure for this. All measurments I seen, have 435…470 nm blue peak, which is blue, not UV

            But yes, some times ago I also thought the UV is answer 🙁

                Generally select blue-light-proof can reduce eye-ache. But I tried blue-light-proof & normal both, no differences, so just wear a normal glass is ok, there is nothing you need to care about.

                  simplex what do you measure with? I am interested to try the same. It would be very bad if the peak was in UV 😃 My guess is 99% blue 1% UV would still hurt after staring at it for hours. If you no longer think UV then what is it that would explain problems with 12 volts DC from a battery?

                      eDenon-2 One more test that i just remembered is to get a UV flashlight. Regular glass does not stop enough to make the light bearable. No tint glasses with "blue light" filters makes it totally painless to look at. All three pairs that i have.

                      I dont know where the disagreement comes from. Maybe there are many fake ones and i got that lucky. But I dont see how they can be both fake, visibly reflect blue/violet and still let all of it to the eyes. If someone can explain that i am ready to accept it

                        Thank you, I already have some supposed blue light filter on my eyeglasses but they don't do anything really.

                          nostrain Do you see any bluish/violet reflection when you take them in your hands and look at them reflecting a LED lamp or TV?

                          Glasses cant help much with flickering. Darker sunglasses may help with the high intensity LEDs

                            Try the cheap Fl-41 sunglasses and report back.

                            dev