judging from colour temperature your mention, it should be fine and probably you the first mention eye strain case with regard 4000k light even from luminus. Most I’ve encounter eye strain found at temperature 6000k-7000k and above. I’ve also had eye sensitive toward 6500k. Solution : I used Anti blue Glass Shades/yellow glass, No problemo. Before, I barely open my eyes and slow adaption to daylight meaning daylights somehow being too bright to me. Have a try and tell me whether it work out or not…