Childhood Myopia:
Causes You Should Know

Causes of myopia in children and how you can reduce the risk

Childhood myopia has several causes. Genetics play a role, but so does lifestyle: many hours spent on near work, too much screen time, and not enough time outdoors. The good news is that you can reduce some of these risks with simple measures, right at home.

When we talk about the causes of myopia in children, specialists say there are two main categories: genetic causes, which we cannot change, and environmental causes, which parents can influence through daily habits and lifestyle choices.

Genetic inheritance
If one or both parents are myopic, the child has a higher chance of developing myopia as well. This factor cannot be changed, but knowing the risk helps with early monitoring.

The most common causes of myopia in children

Time spent on near work and screens
When a child spends many hours reading, writing, or using tablets and phones, the eyes work intensively at close distances. Studies show that long hours of “near work” increase the risk of myopia.

Too little time outdoors
Research shows that every hour spent outside significantly reduces the risk of myopia, by about 2%. The ideal goal: at least two hours per day.

Other factors discussed by specialists
“Urban environments, heavy school workloads, and long hours at a desk without regular breaks can also contribute. Although they are not the only causes, the combination of ‘too much near work + too little time outdoors’ remains the most important.”

How to reduce your child’s risk of myopia

You can’t change genes, but you can influence daily habits:

  • Encourage play and sports outdoors, at least two hours a day
  • Limit phone and tablet use, especially in the evening
  • Help your child take regular breaks from homework and screens
  • Maintain proper distance for reading and monitor use
  • Ensure good lighting for desk activities
  • Schedule regular eye exams, especially if there is a family history of myopia

Recent research has shown another important point: younger children tend to have faster myopia progression. That’s why it is essential to schedule an eye exam as early as possible and to discuss modern correction options with your doctor. These can slow progression and protect long-term eye health.

Myths about the causes of myopia

“Only phones cause myopia.” – False
Extended near work, whether reading or screens, matters.

“If the parents don’t have myopia, the child cannot have myopia” – False
Myopia can appear even without direct inheritance, although the risk is lower.

FAQ

Can sports prevent myopia?
Physical activity helps, especially since it takes place outdoors, but it does not guarantee complete prevention.

If my child starts wearing glasses early, will it make myopia worse?
No. Glasses correct vision; they do not accelerate myopia progression.

What is more important: reducing screen time or increasing outdoor time?
Both matter, but studies show that outdoor time has the strongest protective effect.

Today’s habits protect your child’s eyes

The causes of childhood myopia are multiple, but many of them can be influenced. Genes cannot be changed, but daily habits can. Encourage your child to spend more time outdoors, limit near work, and schedule regular check-ups. This way, you can reduce the risk and better manage the progression of myopia.

Childhood myopia: Tips and innovations from Avvero

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