High frequency neons, halogen or maybe leds (do they make high frequency leds? ). In my experience, most headaches come from stroboscopic effect between the lig

High frequency neons, halogen or maybe leds (do they make high frequency leds? ). In my experience, most headaches come from stroboscopic effect between the light source and the monitors ( sometime from the flickers of a defective light ). Color temperature, not so much...