What is Pediatric Myopia and Why is it On the Rise?
Myopia, or nearsightedness, is a common vision condition where distant objects appear blurry while close-up vision remains clear. Although it affects people of all ages, rates of myopia are rising rapidly among children, turning what was once a routine vision issue into a global health concern. In fact, it is estimated by the year 2050, 1 in 2 children will experience myopia [1].
The surge is about more than just kids needing glasses. Myopia in childhood is linked to serious long-term health risks. And alarmingly, it is progressing to more severe levels [1].
So, what’s behind this rise in childhood myopia and what can be done to help protect children’s vision? In this article, we will explore the causes, the risks, and the steps parents and caregivers can take to slow its progression.
What Is Myopia?
Myopia, or nearsightedness, is a refractive error that occurs when the eyeball is too long from front to back or the when the cornea (the dome-shaped transparent surface of the front of the eye) is too curved, causing light to focus in front of the retina rather than directly on it. The retina is a light-sensitive layer of tissue at the back of the eyeball that sends visual information to the brain. In the case of myopia, where light doesn’t land where it should, distant objects appear blurry.
In children, myopia often develops between the ages of 6 and 14, though it can appear in preschool-aged children and even infants [2]. In fact, the American Optometric Association recommends a first eye exam between 6 months and 1 year when myopia can already be detected [10]. If left unchecked, myopia can continue to worsen through adolescence and into adulthood, increasing the likelihood of reaching higher levels that carry a significantly greater risk of serious eye complications later in life.
Myopia: Genetic and Environmental Risk Factors
Like many health conditions, pediatric myopia results from a combination of genetic and environmental factors.
Genetics play a significant role. Children with one myopic parent are about two times morelikely to develop myopia and that risk jumps to three times if both parents are nearsighted [3].
However, the recent surge in myopia cases cannot be explained by genetics alone [1]. Today’s childhood lifestyles, shaped by environmental and behavioral factors, play a major role in driving this rise. Some of the key contributing factors include:
- Prolonged Near Work
Activities that involve focusing on close objects, such as reading, writing, or using digital devices, have been associated with increased myopia risk [4]. Kids today spend more time on screens than ever before.
- Lack of Outdoor Time
Children who spend more time outdoors have a lower risk of developing myopia. Sunlight exposure and long-distance focusing may help regulate eye growth [4].
- Poor Lighting Levels
Spending extended time in poorly lit environments may strain the eyes and contribute to the development or worsening of myopia [4].
A Growing Global Epidemic
The World Health Organization has declared myopia a global public health issue. In 2000, about 22% of the world’s population was myopic [5]. By 2020, that number had surged to 34% [6]. Projections suggest that by 2050, half of the global population —nearly 5 billion people—willbe myopic [7].
Why It Matters
Myopia isn’t just about needing glasses. It’s a progressive condition with lasting consequences. Once a diopter of vision is lost, it cannot be regained. While glasses or contact lenses can correct the blurred vision caused by myopia, they do not stop the underlying structural changes to the eye, and progression can continue. The more vision that is lost, the higher the lifetime risk of serious complications [1]. High myopia, defined as -5.0 diopters or more, significantly increases the risk of retinal detachment, early onset glaucoma, cataracts, and macular degeneration [1]. This is why early intervention is critical. It’s not just about correcting vision, but about slowing progression and protecting long-term eye health.
Modifiable Risk Factors: What Parents Can Do
The good news? Several risk factors for pediatric myopia are modifiable. Here’s what parents, educators, and caregivers can do to help:
- Encourage More Outdoor Time
Spending just 1–2 hours outside each day has been shown to reduce the risk of myopia. Natural light and opportunities to focus on distant objects help regulate healthy eye growth [8]. - Limit Screen Time and Near Work
Set boundaries around recreational screen use. The American Academy of Pediatrics recommends no more than 2 hours of screen time per day for children ages 6 and older, not including schoolwork [9]. - Ensure Routine Eye Exams
Many kids don’t know they have a vision problem until it’s caught during a screening. Pediatricians typically screen for vision at well-child visits, but it’s also wise to see an optometrist or ophthalmologist, especially if there’s a family history of myopia.
Pediatric myopia is more than just an inconvenience. It’s a progressive health concern with long-term implications. While some risk factors are beyond our control, many are modifiable and may go a long way in protecting children’s vision now and in the future.
While there is currently no cure for myopia, researchers and innovators are actively exploring new ways to slow its progression in children. Learn more about one promising therapy currently in development here: https://www.sydnexis.com/pipeline
Sources:
[3] https://pmc.ncbi.nlm.nih.gov/articles/PMC4473431/
[4] https://pubmed.ncbi.nlm.nih.gov/22772022/
[5] https://www.sciencedirect.com/science/article/pii/S0161642016000257
[7] https://www.scientificamerican.com/article/nearsightedness-has-become-a-global-health-issue/
[8] https://www.myopiaprofile.com/articles/why-outdoor-time-matters-in-myopia-development
[10] https://www.aoa.org/news/inside-optometry/aoa-news/championing-childrens-eye-care