Evening Blue‑Depleted Light Environment in Hospitals and Nonvisual Effects

Why It Matters For Night Shift Workers and Night Owls

Real‑world data how timing and spectrum of light on shift versus before daytime sleep was evident on shift as sleep & alertness for night‑shift workers and night owls. Together with other trials, it frames light as a measurable lever for on‑shift alertness and next‑day sleep, not just ambience. For people who work nights, that frames an everyday choice (when you eat, how you light the end of a shift, how rest is split) as part of the mechanism, not just routine.