Outdoor Time and
Screen Habits for Myopia
The cheapest myopia treatment is daylight. Two hours outside a day lowers the chance of a child becoming short-sighted, and good close-work habits support every other treatment.
Can outdoor time prevent myopia?
Spending about two hours a day outdoors lowers a child's risk of developing myopia, and school programmes that added outdoor time have cut new cases noticeably. Bright daylight is the active ingredient, not exercise. Outdoor time is less powerful at slowing myopia once it has started, so it is combined with a control treatment.
- Outdoor target
- 2 hours a day
- Break rule
- Every 20 minutes, 20 seconds, 6 metres away
- Reading distance
- Elbow to knuckles, about 30 to 40 cm
Balance the Day
Set a typical weekday for your child. The meter and tips update as you move the sliders.
Day balance Move the sliders to score a typical day.
- Aim for two hours of daylight.
- Keep close work outside school to a sensible total.
- Break up close work every 20 minutes.
Targets follow widely used guidance: about two hours outdoors and a break from close work every 20 minutes.
Brightness Is the Key
Outdoor light is ten to a hundred times brighter than indoor light, even on a cloudy day. Bright light triggers the release of dopamine in the retina, which slows the lengthening of the eye. Looking far away for long periods also relaxes the focusing system.
It does not need to be sport. Walking to school, eating a snack on the terrace, playing in the park and reading on a shaded balcony all count. In hot months, use early morning and late afternoon, with a hat.
Five Habits Worth Building
Long, unbroken close work at a short distance is linked to faster myopia. These habits are simple and free.
- Look up every 20 minutes at something 6 metres away for 20 seconds
- Keep books and tablets at least a forearm's length from the eyes
- Use a bigger screen further away, such as a TV, in place of a phone
- Study in a well-lit room, ideally near a window
- Stop screens well before bedtime, since late nights are linked to faster progression
Glasses power changed again this year? An assessment shows how fast it is moving and what can slow it.
What Habits Can and Cannot Do
Habits delay onset and help a little with progression. They do not replace treatment in a child whose power is already rising by half a dioptre a year. No diet, eye exercise, eye drop from a pharmacy or pinhole glasses has been shown to reduce myopia.
If close work brings headaches, tired eyes or blur that comes and goes, a focusing problem may be involved. See child eye strain from screens and pseudomyopia.
Check Your Child's Risk
Five answers, including time outdoors.
A guide for conversation, not a diagnosis. Only an eye examination can measure myopia and its rate of change.
Treatments
Questions Families Ask
Can I improve my eyesight naturally?
Do screens cause myopia?
Does sunlight through a window count?
Do blue light glasses prevent myopia?
Find Out Where the Power Is Heading
A myopia assessment measures the current power, checks how the eyes focus and work together, and sets out the options that fit. In clinic in Chennai and Hyderabad, with online consultations across India.