Myopia, or short-sightedness, is a vision defect where close objects appear clear but distant ones are blurred. This occurs because the image of distant objects is focused in front of the retina rather than directly on it. Typically, this results from an elongated eyeball or excessive cornea curvature. Myopia can be corrected with glasses, contact lenses, or laser treatments that reshape the cornea.

A global study has found that an increasing number of children are grappling with myopia. Researchers suspect they may have identified one of the key causes of this condition. How can we prevent vision problems in young children?

The highest rates of myopia in children are seen in Asia, with 85% of children affected in Japan, 73% in South Korea, and over 40% in China and Russia. Moreover, data suggests that by 2050, millions of children globally will be struggling with sight issues.

Scientists believe the COVID-19 lockdowns have played a significant role in the increase of myopia among children. During the pandemic, people worldwide were confined indoors for extended periods, limiting outdoor activities such as walking and play. As a result, children were spending more time engaging with electronic devices—whether watching films, browsing social media, playing games, or attending virtual classes—activities thought to contribute to worsening eyesight in the young.

According to research, spending time outdoors is one of the most effective ways to prevent myopia. Focusing on distant objects helps to exercise the eyes, keeping them active. In contrast, prolonged exposure to screens can make the eyes "lazy," leading to visual impairment. Experts recommend that preschool and early school-age children spend at least two hours outside each day to maintain healthy vision.

Source: bbc.com