Are the prescriptions of glasses getting stronger the more you wear them? Don’t ignore these 4 ways to delay the progression of myopia!

Who told you to protect your eyes like this?

I want you to look at the green trees in the distance

You changed your phone wallpaper to green grassland

Tell you to stop playing with your phone

You said you wanted to search for eye protection tips on your phone

The result is accidentally jumped to shopping/video/game

I have already seen it clearly

Your seemingly "smart" tips for preventing and controlling myopia

Pushing myself into a deeper lens

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Rumor ①: The more you wear glasses, the stronger the prescription becomes.

Every pair of old glasses put into the drawer makes people wonder: Is the prescription getting worse the more I wear them? ! ! I have changed so many pairs of glasses, but the prescription keeps going up like crazy.

In fact, the truth is 👇🏻👇🏻👇🏻

For most people, if they wear glasses with appropriate degrees and accurate pupil distance and have good eye habits, the glasses themselves will not cause the degree to increase .

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The function of glasses is to help the eyes focus light correctly on the retina so that the eyes can see objects clearly.

Except for sleeping at night, you should not wear glasses .

Image source: Photo Network

If you don’t wear glasses for a long time, it will cause many harms, such as:

1. Not being able to see things clearly will increase eye fatigue and accelerate the development of myopia.

2. Not wearing glasses for a long time may cause disorders in the accommodation and convergence functions of both eyes, aggravate binocular vision abnormalities, and in more serious cases, problems such as strabismus may occur.

3. Many myopic children tend to squint or rub their eyes when they cannot see clearly, which may cause astigmatism or aggravate astigmatism.

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Wearing glasses of appropriate degree can keep the eyes in a clear state when seeing things, avoid excessive use of accommodation due to blurred vision, and thus relax the eyes. Compared with not wearing glasses at all, wearing glasses may slow down the progression of myopia to a certain extent.

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Rumor ②: Wearing a 50-degree lens can prevent the degree from increasing

Some people find that the degree of their glasses is too high, so they want to comfort themselves by getting a lower degree. However, this is not advisable. Wearing glasses with insufficient degree will cause blurred images in the macula, which will make myopia worse.

But in some special cases, such as when you get glasses for the first time, if you find it difficult to adapt to the full correction degree and feel dizzy when wearing glasses, your doctor may lower the degree appropriately to allow you to adapt to wearing glasses first, and then gradually adjust it to the appropriate degree.

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But be careful! This is just a transitional step , and you should eventually wear glasses that match your actual prescription .

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Rumor 3: Blue light from electronic screens causes myopia

The harm of electronic products to eyesight mainly comes from continuous, close, and eye fatigue caused by staring at the screen . Don’t blame blue light for this anymore!

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A moderate amount of blue light (especially blue light in natural light) can regulate the human body's physiological rhythm and promote the secretion of melatonin, which is important for maintaining a normal routine.

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However, excessive exposure to high-energy blue light, especially artificial blue light emitted by electronic device screens for a long time, may cause visual fatigue.

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Rumor 4: Myopia can be reversed

The most common axial myopia is caused by the lengthening of the eye axis, which means that the eyeball has grown bigger.

This kind of growth and development is usually irreversible, which means that an elongated eyeball cannot shorten on its own. Just like height development, it can only grow taller or stop growing, but cannot become shorter.

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Therefore, once myopia occurs, there are only two possibilities: it will continue to grow or stop growing. The degree will not decrease, and it is even less likely to heal on its own.

However, although myopia cannot be reversed, we can slow down the growth rate of myopia by wearing appropriate glasses and maintaining correct eye habits.

1

2 hours of outdoor activities per day

It is recommended that everyone do at least 2 hours of outdoor activities every day, whether it is running on the playground, walking in the park, playing in the community, or simply sitting outside and chatting, as long as the activity is conducted in natural sunlight, it is good for the eyes .

Image source: Photo Network

Even on cloudy days, the light intensity outdoors is much greater than that indoors, and outdoor activities on cloudy days also have a certain effect on myopia prevention and control.

Moreover, compared with indoor environments, the wider field of view outdoors also helps the eyes to adjust to near and far.

2

20-20-20 Rule

That means looking at an object 6 meters (20 feet) away for 20 seconds every 20 minutes.

Image source: Photo Network

At the same time, when writing and reading, we must also maintain a reasonable distance between our eyes, and remember “one foot, one fist, one inch”, that is:

The distance between eyes and books should be kept at least one foot (about the distance of a forearm);

Keep a fist's distance between your body and the table;

When holding a pen, keep the tip of the pen about an inch away from the tip of your finger.

Do not read or write while lying on the bed or lying on the table, do not read while walking, and do not read or write in a shaking car.

In addition, it is recommended that everyone 👇🏻👇🏻👇🏻

When watching TV, the distance from the TV should be more than 3 meters, or the distance from the TV should be more than 6 times the diagonal length of the TV screen;

When looking at a computer, the distance between your eyes and the computer screen is greater than 50 cm;

When using a mobile phone, the distance between your eyes and the surface of the phone should be no less than 40 cm.

3

Precision in fitting glasses

Medical eye examination + foot correction glasses + check-up every six months, don’t let blurred images stimulate the eye axis.

4

Diet and sleep

Eat a balanced diet and eat more foods rich in vitamins A, C, E and lutein, such as carrots, blueberries, spinach, citrus fruits, etc. These nutrients are good for eye health.

At the same time, ensuring adequate sleep helps the eyes get sufficient rest, which is important for eye development and prevention of myopia.

There is no shortcut to myopia prevention and control

But science can help us avoid detours

The eye axis is irreversible, and it is the most economical to use outdoors

Prescription glasses should be accurate, and eyesight should be checked regularly

Do you have any other questions about myopia?

Welcome to leave a message in the comment area

Statement: This article is a medical-related educational popular science article. It does not involve specific treatment methods or medical behaviors and cannot replace hospital visits.

Author

Song Yutong, Chief Technician of Ophthalmology, West China Hospital, Sichuan University

Chen Xiaohang Assistant Researcher, Department of Ophthalmology, West China Hospital, Sichuan University

Zhang Xin Head Nurse of Ophthalmology Department, West China Hospital, Sichuan University

This article is guided by the teacher

Content Production

Edit: 100% sweet

Map: Eastern Zhou Dynasty