**7. Conclusions and Recommendations**

The functioning of human biorhythms responds to the proportion and intensity of the light we receive, whether natural or artificial. We are light-based beings designed to live with the rhythm of sunlight. Published articles that refer to the possible damage of blue light emitted by electronic equipment or LED lights do not scientifically prove that such equipment can damage the retinas of its users, including teenagers.

According to the research conducted so far, the light received from luminaires at night and from the electronic equipment used by adolescents, however low, is believed to have a negative influence on the balance of circadian cycles and on the quality of sleep.

Numerous studies around the world have come to the same conclusion. There is a growing pandemic of myopia in children and adolescents in certain areas of Asia, such as Singapore and South Korea, that exceeds 80%. This pandemic is suspected to be related to the use of electronic devices, but so far, its direct cause and possible solutions remain unknown.

The new generation of LED lights whose blue light intensity can be increased without increasing the illuminance, makes it possible for the professionals responsible for educational centers to recognize and alter the composition of their centers' lights since this composition can influence the "mood" of the affected people, including adolescents.

No publications were found on the composition of light in adolescent training centers or the psychological responses to it. For all these reasons, there is growing concern among international bodies, both at the European and the global level. These bodies have created groups of experts to urgently develop regulations to control the composition of the lights in new luminaires.

Based on the conclusions of this review, the following control or preventive measures are suggested. These measures could be promoted by administrations, educational centers, and families.


• Make this circumstance known to the public bodies responsible for consumer protection, so they can inform people, Thus, when consumers acquire new luminaires for their homes, they can consider the proportion of blue light those luminaires contain due to their non-visual effects.
