World Sight Day: Screen Time Habits That Are Hurting Children's Eyes

World Sight Day, observed on the second Thursday of October, draws global attention to vision health and the prevention of avoidable vision loss. In recent years, one concern has risen to the top of the list for parents and eye specialists alike: the effect of screens on children's eyes.

Online classes, homework on tablets, cartoons on phones and weekend gaming sessions mean many children now spend more time looking at screens than ever before. While screens are a part of modern life and learning, certain habits can strain young eyes and contribute to a growing problem worldwide: childhood myopia, or short-sightedness.

Why Children's Eyes Are More Vulnerable

A child's eyes are still developing. The eyeball grows in length during childhood, and the way it grows is influenced by genetics and by how the eyes are used every day. When children spend long hours focusing on objects very close to their faces and little time outdoors, the eye may grow longer than it should. This elongation causes distant objects to look blurry, which is myopia.

Children are also less likely to notice or report discomfort. An adult might rub their eyes and take a break; a child absorbed in a game may keep going for hours. Young children also tend to hold devices much closer to their faces than adults do.

Screen Habits That Can Harm Children's Eyes

1. Holding Devices Too Close

Phones and tablets are often held just 15 to 20 cm from a child's face. This forces the focusing muscles inside the eye to work very hard for long periods. Over time, sustained close focus is associated with a higher risk of developing and worsening myopia.

• Encourage children to hold devices at least an arm's length away, roughly 40 to 50 cm for tablets.
• Use a stand for tablets during online classes so the screen stays at a steady distance.
• Choose a laptop or larger screen for long study sessions rather than a phone.

2. Long, Uninterrupted Sessions

Continuous screen use without breaks leads to digital eye strain. Children may experience tired, aching eyes, headaches and blurred vision after long sessions.

• Follow the 20-20-20 rule: every 20 minutes, look at something about 20 feet (6 metres) away for at least 20 seconds.
• Use timers or app reminders to prompt breaks.
• Make breaks active: stand up, walk around or look out of a window.

3. Forgetting to Blink

People blink much less often when staring at screens. Reduced blinking causes the tear film on the eye's surface to evaporate, leading to dry, gritty or burning eyes.

• Teach children to "blink break" regularly, especially during games or videos.
• Keep rooms adequately humidified and avoid fans or air conditioners blowing directly at the face.

4. Using Screens in the Dark

Watching videos in bed with the lights off is common, but the sharp contrast between a bright screen and a dark room increases glare and eye discomfort.

• Keep room lighting soft but present when children use screens.
• Reduce screen brightness to match the surroundings.
• Avoid screens in bed altogether where possible.

5. Screens Late at Night

Blue light and stimulating content in the evening can interfere with sleep by suppressing melatonin, the hormone that signals it is time to sleep. Poor sleep leaves children tired and irritable, and tired eyes are more prone to strain.

• Stop screen use at least one hour before bedtime.
• Keep phones and tablets out of the bedroom overnight.
• Use night-mode settings in the evening if screens are unavoidable.

6. Too Little Time Outdoors

This is one of the most important factors. Research consistently shows that children who spend more time outdoors have a lower risk of developing myopia. Natural daylight is thought to support healthy eye growth, and outdoor play naturally encourages looking at distant objects.

• Aim for at least 1 to 2 hours of outdoor time daily.
• Outdoor time counts even without sports: walks, playground visits or playing in a courtyard all help.
• Protect eyes with sunglasses and hats during very bright midday sun.

7. Poor Posture and Screen Position

Lying on the stomach or curling up with a phone leads to awkward viewing angles and screens held closer to the eyes.

• Encourage sitting upright at a table for study and screen time.
• Position the top of the screen at or slightly below eye level.
• Make sure the room lighting does not create glare on the screen.

How Much Screen Time Is Appropriate?

Recommendations vary by organisation, but general guidance includes:

• Under 2 years: Avoid recreational screen time, apart from video calls with family.
• 2 to 5 years: Limit to about 1 hour a day of high-quality content, ideally watched with a parent.
• 6 years and above: Set consistent limits that leave enough time for sleep, physical activity, outdoor play and homework.

Educational screen use for school counts too. When online learning takes up much of the day, it becomes even more important to reduce recreational screen time and build in outdoor breaks.

Warning Signs Your Child May Have a Vision Problem

Children rarely say "I can't see properly." Instead, vision problems often show up in behaviour. Watch for:

• Squinting or narrowing the eyes to see distant objects
• Sitting very close to the television or holding books and devices close to the face
• Frequent eye rubbing
• Complaints of headaches, especially after school or screen use
• Tilting the head or covering one eye to see better
• Watery, red or itchy eyes
• Losing their place while reading or using a finger to follow text
• Difficulty seeing the classroom board or a drop in school performance
• Avoiding reading or close-up activities
• Excessive blinking

If you notice any of these signs, schedule an eye examination rather than waiting for the next routine check-up.

Digital Eye Strain vs Myopia: What's the Difference?

Digital eye strain is a temporary set of symptoms caused by prolonged screen use. It includes tired eyes, dryness, blurred vision and headaches. Symptoms usually improve with rest and better habits.

Myopia is a refractive error in which distant objects appear blurred because of the shape of the eye. It usually develops during school years and tends to progress as the child grows. It does not go away with rest and requires correction with glasses or contact lenses. High myopia later in life is linked to a higher risk of serious eye conditions such as retinal detachment, glaucoma and myopic maculopathy, which is why early detection and management matter.

How Eye Specialists Help

A paediatric eye examination is quick, painless and child-friendly. It may include:

• Checking visual acuity with age-appropriate charts
• Refraction tests to determine whether glasses are needed
• Assessment of eye alignment and focusing ability
• Examination of the eye's surface for dryness
• In some cases, dilating drops for a more accurate refraction and a view of the retina

If myopia is detected and progressing, specialists may discuss options to slow its progression, such as low-dose atropine eye drops, specially designed spectacle lenses or contact lenses, along with lifestyle changes.

When Should Children Have Eye Check-ups?

• A first eye screening in infancy, typically as part of routine paediatric checks
• A comprehensive eye examination before starting school
• Regular check-ups every one to two years during school years, or as advised by the eye specialist
• Annual or more frequent checks if the child already wears glasses or has a family history of myopia

A Family Screen Plan That Works

Rules work best when the whole family follows them. Consider:

• Creating screen-free zones such as the dining table and bedrooms
• Setting screen-free times, such as during meals and the hour before bed
• Replacing some screen time with outdoor play, hobbies, board games or reading printed books
• Modelling healthy habits yourself, since children copy what adults do
• Using parental controls and built-in screen time trackers to monitor use

Conclusion

Screens are not going away, and they bring real benefits for learning and connection. But how children use them makes a big difference to their eye health. Keeping devices at a safe distance, taking regular breaks, limiting night-time use and prioritising daily outdoor time are simple habits that can protect young eyes for life.

This World Sight Day, make your child's vision a priority. If your child squints, complains of headaches or hasn't had an eye check-up in over a year, don't wait. Book your test with Citizens Specialty Hospital and give your child the clear vision they need to learn, play and grow.