Research has shown that blue-violet light causes retinal phototoxicity
Short-wavelength blue-violet light (415-455 nm) poses a significant risk to photoreceptor cells. These cells, located in the retina, face stress caused by a combination of high oxygen demand and continuous exposure to radiation. This condition leads to the formation of free radicals and the accumulation of degraded residues known as lipofuscin. These residues can cause damage to the retinal epithelium over the years, increasing the risk of AMD.
The cyan component of the light spectrum is a key aspect in regulating circadian rhythms
In contrast to blue-violet light, blue and turquoise/cyan light with a longer wavelength, approximately 470 nm, is crucial for maintaining human health. Studies show that this type of light stimulates retinal ganglion cells containing melanopsin and triggers processes that regulate melatonin levels. This supports the natural circadian rhythms that affect sleep, mood and overall vitality. For these biological processes to function properly, sufficient natural daylight or artificial light, which is similar in spectral composition to the sun and contains a cyan light component, is necessary.
Prolonged exposure to light with a high blue component poses a risk of damage to the retina and other eye structures and may contribute to the development of eye diseases.
Spectral emissions, especially from LED lighting and electronic devices, contain a higher concentration of blue-violet light (415-455 nm), has been identified in many studies as phototoxic to the retina of the eye. The human eye has natural protective mechanisms, such as the yellow pigment in the macula, which attenuate blue light, but these are not sufficient against these light sources. Exposure to blue-violet light also promotes the accumulation of lipofuscin in Bruch’s membrane, which increases the risk of age-related macular degeneration (AMD), and regular exposure even at low intensities can gradually damage the retina. Cumulative exposure from various artificial light sources over a lifetime can lead to long-term changes in the retina, which is also compounded by modern lifestyles with frequent use of electronic devices and limited access to natural light.
