EnChroma Outdoor Lenses are designed to enhance colour vision outdoors in bright sunlight or partly cloudy conditions and also serve as sunglasses delivering 100% UV blocking and glare protection. EnChroma Indoor Lenses are designed to be used in typical indoor lighting conditions to enhance colour vision while performing activities including but not limited to school work, cooking, watching sports or movies, browsing the web, playing video games, board games art projects and so much more. For best results, all EnChroma colour blind glasses should be used around bright, full-spectrum lighting. Where there is light, there is colour!