"Myopia 12000 degrees" rushed to the hot search!Regarding the prevention and control of children and adolescents, we must understand these knowledge

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#What is the experience of myopia 12000 degrees#

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Share the patient you encountered

And exposed the glasses worn by the patient

Does myopia 12000 degrees really exist?

The doctor said: "Theoretically, 12000 degrees myopia exist, and generally this vision will be accompanied by other diseases." The doctor said that it is not uncommon for myopia for three or four thousand degrees in myopia.

Generally speaking, even if myopia exceeds 600 degrees, even if myopia is high, myopia exceeding 1000 degrees is a super high myopia. More than 3,000 degrees of myopia cannot be verified by automatic optical test in the computer. Doctors need to be verified by converting the eye shaft and experience.

For example, the length of the axis of normal people is between 22-24mm, while the eye axis length of the super high myopia exceeds 26mm, or even 36mm. "The longer the eye shaft, the higher the probability of the lesion of the retinal lesions, and even the cracks and falling offspring."

8 "Knowledge Card" detailed explanation of children and adolescents

Myopia prevention and control nouns term

vision

Also known as visual resolution, it is the minimum distance between the two objects that can be distinguished by the eyes.

The vision is gradually developing with the development of the refractive system and the retinal development. The age of 0 to 6 is the critical period of children's vision development. Newborn births only have light. The 1 -year -old vision can generally reach 4.3 (standard to digital vision table, below below, below At the same time), 2 years old can generally reach 4.6, 3 years old can generally reach 4.7 or more, 4 years old can generally reach 4.8 or more, and 5 years old and above can generally reach 4.9 or more.

Processing process

Children's eyeballs and vision are gradually developing. The eyeballs of newborn are small, the axis of the eye is short, and the eyes are in a long -aversion state.

Children's adolescence is the fastest stage of eye refractive changes. The law of development is that as the child grows and develops, the eyeball gradually grows, the eye axis becomes longer. Process.

The ideal situation is that after the age of 12, it is developed from the end of the eyes to face the eyes.

Reserve reserves

Most of the hyperopia before viewing is a physiological hyperopia. It is a "remote reserve", which can be understood as a "buffer zone" that develops into myopia.

Insufficient reserve reserves refer to the normal vision of the naked eye. Although the refractive state after the spathered optometry did not meet the myopic standard, the degree of ectopic degree was lower than the corresponding age range.

For example, children aged 4 to 5 are 150 to 200 degrees hyperopia, and there will be 150 to 200 degrees of hyperopia reserves. If children's physiological refractives are only 50 degrees of end of the vision, it means that its hyperopia reserves are consumed too much. It may appear earlier.

Naked eye vision

Also known as unable to correct the vision, it refers to the vision measured without any optical lens correction, including naked eyes and naked eye -myopia.

Alphabetic

The unit of refractive phenomenon (refractive power) is expressed by D.

Parallel light gathered at 1m focal length through the refractive system of the eye, and the refractive force of the eye was 1 refractive or 1.00 d.

Usually the degree of glasses reflects the refractiveness. The value of the refractive D is multiplied by 100 is the degree. For example, the 200 -degree myopia mirror flexion is ﹣2.00 d, and the refractiveness of the remote mirror of 150 degrees is ﹢1.50 D.

Shortsighted

A type of refractive incorrect refers to the pathological state of the parallel light when the human eye regulates the relaxation state, and the parallel light focuses on the pathological state before the eyeballs.

Screening myopia

Applying remote vision examination, non -ciliary muscle paralysis state, such as computer optometry or string mirror examination, etc., and other fast and simple methods to screen for children and adolescents may be screened out.

When children and adolescents over the age of 6 are <5.0, the computer optometry is used by non -ciliary muscle paralysis, and an equivalent spherical mirror (SE) ≤﹣0.50 d is determined as screening myopia.

Equivalent

Equivalent spherical mirror (SE) = ball mirror +1/2 pillar mirror.

For example, if a student's ball mirror degree is ﹢0.50 d, and the number of mirroring is ﹣3.00 d, the student's SE =+0.50+1/2 (﹣3.00) = ﹣ 1.00 d, that is, the equivalent to the myopia of ﹣1.00D.

How to use the vision gauge? How to count the vision? Let's learn together ↓↓↓

Standard pair visual schedule

(GB11533—2011) Excerpt

1 How to use the vision gauge

1.1 vision measurement

1.1.2 General vision measurement

According to the general use method of the vision gauge, the minimum visual label that can be identified by the eye detection (the correct number of viewing the logo should exceed half of the total number of vision of the line), and write down the vision record value of the vision of the bank, which is the value of the line. The vision of the eye.

1.1.3 Low View Power Measurement

When the vision is less than 4.0 (0.1), the following method can be determined:

a) The person who was inspected directly to 1m before the end of the vision table, the measured 5 points of records needed to minus the correction value 0.7 (that is, 1M in Table 1 to check the corresponding correction value E). 3.3-4.6 (0.02-0.4) vision;

b) When the inspector approach the distance from the far vision table to a check distance listed on the left side of Table 1, the measured 5 -point record value plus the corresponding correction of the corresponding correction is the actual vision;

2 Vision statistics

2.1 Based on statistical treatment such as 5 -point records and statistical treatment such as comparison of vision level and average vision, standard deviation, standard error, and significant inspection.

2.2 All decimal records, score records and perspectives, the size of the benchmark, and the design distance cannot be directly used to compare and statistics by the 2.1 method. The decimal records can be used by Table 2 to convert statistics.

Table 2 decimal records to divide 5 points record

Note: If the inspector needs to be recognized at 80cm before the vision table, the 4.0 line of view is recognized, and the visual record is 3.2; the 60cm is recorded as 3.1; the 50cm is recorded as 3.0.

9 initiatives of children and adolescents myopia prevention and control

1. Create an atmosphere of love

Promote parents to take the initiative to understand the knowledge of scientific eye protection, cooperate with the school to actively participate in myopia prevention and control science activities and preach to their children. Promote parents to lead by examples, reduce dependence on mobile phones, computers, and online games, take the lead in doing "low -headed people", correctly guide demonstrations, and increase parent -child time.

2. Control electronic products

Promote parents to strengthen their children's supervision and management of electronic products, choose the right electronic screen, and reasonably control the time of using electronic products. Use electronic products to follow the "20-20-20" tactics. After watching the screen for 20 minutes, overlook at least 20 seconds other than 20 feet (6 meters).

3. Improve the light environment

Promote parents to create a good learning lighting environment for their children. When the light is insufficient during the day, the lights are turned on to make up the light. The desk lamp is placed on the side of the office, and the light source is slightly lower than the height of the eyes.

Fourth, increase outdoor activities

Promote parents to create a good family sports atmosphere, participate in physical exercise with their children, encourage, guide and support children to master 1-2 sports skills to ensure that children have at least 2 hours of day and day -day outdoor activities. Try to bring your children into nature as much as possible on the weekend and bath the sun to prevent myopia.

5. Read and write posture

Promote parents to correct their children's bad reading and writing postures, so as to "one foot, one punch, one inch". Reading and writing continuously not exceed 40 minutes, avoid reading in the carriage of walking, eating, and shaking.

6. Reduce the burden of extra -curricular

Promote parents to actively cooperate with the school to reduce the burden on their children's homework and off -school training, and do not blindly participate in extracurricular training and follow the wind. They should choose reasonably according to their children's hobbies to avoid school burdens and family burdens.

Seven, ensure sleeping diet

Promote parents to ensure that their children have sufficient sleep time. Primary school students are 10 hours, 9 hours of junior high school students, and 8 hours of high school students to help children develop good work and rest habits and ensure a balanced dietary nutrition.

8. Focus on vision status

Promote parents to pay close attention to their children's vision changes and abnormal eyes, and regularly check vision to achieve early discounting, early intervention, and early correction. It was found that the child was unconsciously squinting, crooked heads, frowning, squeezing eyes, etc., and went to a regular medical institution in time to prevent myopia scientifically in accordance with the doctor's advice.

Nine, beware of myopia scams

Promote parents who do not believe in false propaganda such as "myopia can heal", "reduction degrees", and "eye -conditioning artifacts" to avoid delaying the child's best correction period.

Source: Comprehensive Weiyan Education, China Youth Daily, etc.

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