Blue light, also referred to as high-energy visible or HEV light, is known to have an impact on our health; it disrupts our sleep-wake cycle, affects melatonin production, and causes eye strain. Blue light is also linked to increased risk of eye disease, Blue light, also referred to as high-energy visible or HEV light, is known to have an impact on our health; it disrupts our sleep-wake cycle, affects melatonin production, and causes eye strain. Blue light is also linked to increased risk of eye disease, as well as increased risk of diseases such as diabetes and cancer. However, exposure to blue light can also have a harmful effect on our skin.