The Commission Internationale de l'Éclairage (CIE) is an international organization dedicated to the study and promotion of light and lighting. Founded in 1913, it focuses on the science of color and vision, providing guidelines and standards for lighting design and applications. The CIE plays a crucial role in ensuring consistent and effective lighting practices across various industries. The CIE develops technical reports and recommendations that influence areas such as architecture, photography, and visual arts. Its work supports professionals in creating environments that enhance visibility and comfort, while also considering the impact of light on human health and well-being.