The cyan region of the spectrum, sometimes incorrectly referred to as the blue region of the spectrum, includes wavelengths of light between 460 and 500 nanometres. This is the part of visible light that appears blue with a hint of green.
Cyan light affects the human body in several ways:
- Cognitive support: It stimulates cognitive functions such as concentration, memory and learning. This leads to increased productivity, alertness and overall psychological well-being.
- Mood improvement: It has antidepressant effects and promotes the secretion of serotonin â the happiness hormone. This leads to improved mood, reduced stress and increased overall psychological well-being.
It should be noted that an excess of the blue spectral component of light below 455 nm can have negative effects, especially on the retina of the eye, to which it causes oxidative stress and, with frequent use of such light, premature macular degeneration of the retina may occur.
