- Those with myopia fall asleep later and get lower quality sleep, the study finds.
- According to the researchers, this is due to poor sleep-induced circadian rhythms and low production of melatonin.
- The use of screens is widely recognized: by emitting blue light they delay sleep and also cause a significant increase in myopia cases in young people.
People with nearsightedness are more likely to sleep poorly at night than people with nearsightedness. This is the conclusion reached by researchers at Flinders University in Australia. In A study published in the journal Sleep, They link sleep disturbance and the development of myopia. According to them, those with close vision sleep less The circadian rhythms changed And low production of melatonin, secreted in the brain and responsible for regulating sleep at night.
Synchronized circadian rhythms
“Circardian rhythms and sleep disturbances due to the advent of artificial light and the use of electronic devices that emit light for reading and recreation have become a recognized health problem in many areas, but their impact on eye health has not been fully studied. Dr. Ranjay Chakraborty, an optometrist at the Caring Futures Institute at Flinders University, explains. These researches provide important evidence that proper sleep and circadian rhythms are essential not only for general health but also for good vision. “
To determine the link between myopia and poor sleep, researchers measure circadian rhythm and melatonin production in people with myopia, as well as those with normal eyesight. All of the participants were university students in their twenties.
According to Dr. Chakraborty, melatonin levels were measured using saliva and urine samples from participants, and myopic youngsters exhibited significantly delayed circadian rhythms and lower melatonin production than participants. Have normal vision.
Screens, cause myopia and drowsiness
Proximal vision is a vision defect that causes blurred distance and sharp focus. This condition is caused by excessive elongation of the eye in childhood. As a result, light rays entering the eye are blurred, rather than directly in front of and on the retina.
Usually in adolescents, myopia also occurs Appears at any age from childhood. According to A study published in the journal Ophthalmology In 2016, the prevalence of myopia in 2000 was 22.9% of the world’s population. In 2050 it will be 50%. According to the question, the researchers’ opinion: high consumption of screens, It promotes the onset of myopia. Hence the need for children to reduce exposure to screens to reduce the risk of progression of myopia in their youth. “Adequate sleep is essential for children’s learning, memory, continuous attention, academic performance and general well-being in their early development”, Dr. Emperor remembered, he remembered it “Most digital devices emit blue light, which can suppress melatonin production and delay circadian rhythms during the night, leading to delays and less sleep.”.