Weekly Science | How to ensure "outdoor activities" in summer

Staying outdoors for 2 hours a day is essential for protecting eyesight. However, summer is here and the heat is unbearable. Parents say: Children may not be able to spend as much time outdoors as they want... It doesn't matter, we have some tips.

Key knowledge consolidation:

When engaging in outdoor activities, the outdoor field of vision is wide and looking into the distance can relax the ciliary muscles and give the eyes sufficient rest. At the same time, natural light varies in brightness and darkness. In order to adapt to changes in brightness, the pupils will unconsciously adjust their size to control the light flux. The movement of the pupils also drives the movement of the ciliary muscles and lens, forming a three-link visual system, which makes the eye's visual system less likely to solidify and degenerate, thereby achieving the purpose of enhancing accommodation and preventing and controlling myopia.

If the weather is not suitable for going out, you can choose to stay at home.

balcony

Balcony time can also be considered outdoor, especially on a semi-enclosed balcony. Except that the field of vision is limited and the eye adjustment may not be completely relaxed, the light intensity, UVA, and short-wave light are completely unaffected. Most of the factors that play a role in outdoor activities can be achieved on a semi-enclosed balcony. In cloudy conditions, 2 hours outdoors can be extended to 3-4 hours.

8:00-9:00 Balcony Yoga Exercise 15:30-16:30 Children's Handicraft Class Note: Young children are not allowed to play alone on the balcony.

Bedrooms, study rooms, etc. with good lighting

Living room, bedroom, study room can also create conditions

After understanding the principle, it is easy to find that in addition to the balcony, there are many other places indoors that can be exposed to natural light: living rooms, bedrooms, and study rooms with floor-to-ceiling windows are all good places.

We can choose a period of time when the sunlight is mild (the sunlight is stronger from 11:00 to 14:30), open the windows, and do appropriate physical activities facing outside the window; of course, if you are a little lazy, you can also choose to lie down like Ge You.

If the homework time on weekends is long, parents and children can do the following: First, move the child's desk to the window or balcony; after every 20-30 minutes of homework, remind the child to go to the balcony for 3-5 minutes of free time. This will allow the child's eyes to relax in a timely and effective manner and avoid visual fatigue.

Of course, the best thing for eyesight is to go outdoors, such as to residential areas, parks, suburbs and other places with wide views.

Suzhou Children's Vision Health Science Museum

Children's Vision Health Science Popularization Base in China

Focus on children's vision health and protect your eyesight