Every hour, children spend the screens raising the opportunity of myopia, you find the study Children’s health

Every hour young people spend in front of the screens that increase their chance to be short -sighted, researchers found, as experts warn that young children should have limited use of devices and spend more time in the open air.

The nearsightedness causes a fold with a more prolonged family, which is an increased problem, as research indicates that about 40 % of children and adolescents around the world can have the situation by 2050.

While genetics play a role in the World Health Organization that develops myopia, other factors that increase risk include not spending enough time in the open air and focusing on long -time things, which can explain the cause of the screen time Associated with greater risks and intensity of myopia.

Now, the researchers in Korea say they have given a new light on this relationship in an analysis of 45 studies, which included 335,524 participants, which looked at the use of digital screen devices such as mobile phones, gaming and television devices.

The results, which depend largely on data from children, adolescents and youth, reveals that an additional watch from the daily screen time is linked to average, by 21 % of the possibilities of myopia.

Professor Chris Hammond of Kings College London, a consultant ophthalmologist who did not participate in the work, said that, based on the spread of the nearsightedness about 15 % in children between the ages of 12 and 13 years in the UK, the research indicated that rose to 18 % if they are used Screen for an hour, and 27 % after four hours.

The Korean team added that for those who already have this situation, an additional hour has been associated with a 54 % higher screen time to become more stories.

When the researchers deepened in a deeper way, they found that the risk of the emergence of a nearsightedness increased sharply with an increase in the daily screen, with 5 % greater probabilities of a single -hour percepse per day from exposure compared to the lack of use of the screen, and 97 % higher possibilities for a period of time Four hours. day.

In addition to this period, the researchers added more slowly, while there was no clear correlation with myopia for the use of the screen less than one hour per day, indicating the potential “safety threshold”.

However, the research has restrictions, including that some studies relied on self -reports in myopia, the team did not look at the number of times the participants carried out activities about another, and the measuring screen time is difficult, and there is an additional guide to support an idea Safety threshold.

In addition, the search was unable to prove the screen time causing myopia.

“For example, since the use of the screen mostly occurs inside, the decrease resulting from exposure to the preventive benefits of external environments may contribute to increasing the risk of myopia,” the team’s books.

Hammond agreed, noting that the interaction of risk factors in the development of the nearsightedness is complicated.

But he said: “This metaphor analysis, in addition to the studies of” natural experience “from the coffee locks, strongly indicates that a mixture of young children kept at home and spending a great time on screens is not good for their eyes and the group leads to short -sightedness.”

Professor Robert Born of the University of Angelia Roskin, an ophthalmologist, welcomed the study, noting that there is a major concern that the exacerbation of myopia has raised the danger of the conditions that threaten vision. “Because,” he said.