Into the Blue: Novel Test Reveals Blue Light Damage, Protection Strategies


Blue light, or high energy visible (HEV) light, is usually defined as light emitted by the sun in wavelengths ranging from 400–500 nm.1 Approximately 40% of the solar radiation reaching the earth’s surface is infrared light (> 800 nm), while 55% is visible light (400–800 nm) and ~7% is UV light (290–400 nm).2

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