Late night computer work or television is made loads easier and healthier with my top of the range blue light blocking glasses. They work because the lenses contain pigments that absorb the wavelengths emitted by artificial lights and screens that are most damaging to our eyes, our hormones, our melatonin level, our circadian rhythm and overall health. Blocking these wavelengths increases natural melatonin secretion leading to improved sleep, energy levels, overall health and a reduced risk of chronic disease not to mention the fact that eye strain and headaches disappear!