I don't trust this as this study is very weak and takes into account only a particular platform. Without blue light filter, after prolongated usage, my eyes st

I don't trust this as this study is very weak and takes into account only a particular platform. Without blue light filter, after prolongated usage, my eyes start to water and itch. It makes me very uncomfortable. But with blue light filters like flux and Qredshift, I use dimming and filtering 24/7. I never have aforesaid problems when I am using filters and dimming. I have also started to use ambient lighting (just a $4 table lamp) behind the screen. This makes things better. So, with the lowest brightness allowed with no filters or dimming, I start to face unavoidable peoblems after about four hours of usage. OTOH, with 24/7 use of flux or qredshift, I can comfortably undergo screen time for 14-15 hours. I would also like to mention that I have seen difference in being able to sleep.