The Impact of Interior Lighting on Health and Visual Comfort

Interior lighting profoundly affects health, perception, and comfort. This study investigates key lighting parameters—intensity, spectrum, exposure timing, and spatial layout—and their physiological and psychological effects. Based on scenario simulations, this paper analyzes melatonin suppression, eyestrain, stress, and vitamin D synthesis across three interior environments: residential, office, and classroom. Examples include real-world applications like circadian lighting in Scandinavian schools, glare control in open-plan offices, and daylight-integrated hospital rooms. The study concludes that dynamic, human-centric lighting is vital for health-supportive environments.