The Dark (and Light) Side of the Blue - The Harm and Benefits of Blue Light

Course overview

This one-hour, technical course provides opticians with a clear, balanced, and evidence-based understanding of blue light and its role in vision and overall health. Participants will explore where blue light fits within the visible spectrum, its natural and artificial sources, and its well-documented benefits for alertness, mood, cognitive performance, and circadian rhythm regulation. The course distinguishes legitimate concerns from common myths by reviewing current positions held by major professional organizations. Emphasis is placed on digital eye strain, including contributing visual behaviors and ergonomics. Finally, opticians will learn how to responsibly recommend blue-light-filtering lenses and coatings based on patient lifestyle, expectations, and visual demands.