2022 new edition of the children's axial length reference standard.
The data came from surveys in Anyang Children's Eye Disease Research and Shandong Children's Eye Disease Research and other regions).
The ocular axis refers to the length of the anterior-posterior axis of the eyeball and is an important parameter for assessing eye development. During the growth and development of children, the axial length of the eye increases with age.
The above data are reference intervals for axial length in 6 15-year-old school-age children, which is about 22 at 6 years of age46 mm, followed by an average of 0. per yearThe velocity increases at 09 mm, with the most significant increase at the age of 7 and 8 (average increase of 0.).22 mm) 。
If the eye axis grows too fast, it will lead to the onset and progression of myopia. This is because an excessively long eye axis increases the refractive power of the eyeball, causing light rays to focus in front of the retina, resulting in myopia.
In general, the longer the eye axis, the higher the degree of myopia. This is because a long axis increases the refractive power of the eyeball, causing light rays to focus in front of the retina, which can aggravate myopia. At the same time, the long eye axis will also cause obvious traction on the retina of the fundus, causing complications such as myopia-related macular disease, resulting in irreversible damage to vision.
Therefore, controlling the axial length of the eye is the key to preventing pathological myopia. If you find that your child's eye axis is outside the reference range, you need to be vigilant!
The importance of measuring the eye axis regularly.
Whether or not the eye can see a clear target is determined entirely by the length of the eye axis and the refractive medium in the eye.
Measuring the length of the eye axis helps the ophthalmologist determine whether the eye is developing properly.
As the degree of myopia increases, so does the eye axis. If the axial length is more than 26mm, it is called high myopia. This can also lead to future vision damage (e.g., retinal hole split, retinal detachment, glaucoma, choroidal neovascularization, etc.).
On the Internet! ）
Avoid eye axis growth that is too fast.
a) Maintain an appropriate reading distance and posture.
When reading or using a computer for long periods of time, you should keep an appropriate distance and maintain good posture, and try to avoid looking down or sideways for long periods of time. In addition, taking proper rest and taking a break from your eyes every 30 minutes or so can effectively relieve eye fatigue and slow down the growth of the eye axis.
2) Control the time you spend using your eyes.
Prolonged use of electronics can cause eye fatigue and accelerate axial growth. In particular, children and adolescents should control the time they spend using electronic devices every day and participate in more outdoor activities to allow their eyes to be fully rested and relaxed.
3) Maintain adequate sleep time.
Getting enough sleep is very important for vision health, and lack of sleep can lead to eye fatigue and dryness, accelerating eye axis growth. Get at least 7-8 hours of sleep each night to give your eyes plenty of rest and recovery.
On the Internet! ）
4) Eat a balanced diet.
A diet rich in vitamins and minerals is also very important for vision health. In particular, nutrients such as vitamins A, C, E, and zinc have great benefits for eye health. Therefore, one should maintain a balanced diet and eat more nutrient-rich foods such as fruits, vegetables, and whole grains.
5) Have regular eye examinations.
It can detect the rapid growth of the eye axis as early as possible, and take effective measures to intervene and ** in time. Especially for people with a family history of myopia or prolonged use of electronic products, regular eye examinations should be done.