How to distinguish true and false myopia? Scientific Eye Care Guide
In recent years, the problem of myopia has become a global health topic, especially among teenagers, whose myopia rate continues to rise. However, many parents have misunderstandings about myopia, and even confuse "pseudomyopia" with "true myopia". This article will combine the hot health topics on the Internet in the past 10 days, use structured data to analyze the difference between true and false myopia, and provide scientific eye protection suggestions.
1. The core difference between true and false myopia
| Comparative item | pseudomyopia | True myopia |
|---|---|---|
| medical name | accommodative myopia | axial myopia |
| essential reason | Excessive ciliary muscle tension | Abnormal growth in axial length of the eye |
| visual performance | temporary blurred vision | persistent vision loss |
| Correction method | Recoverable with medication/visual training | Requires glasses or surgery |
| Proportion | Approximately 15% of the total myopia population | Accounting for about 85% of the total myopia population |
2. Myopia-related data that is hotly discussed on the Internet
| Hot search topics | Number of discussions (10,000) | key data |
|---|---|---|
| Myopia prevention and control among teenagers | 482.6 | The myopia rate among primary school students in my country is 52.7% |
| OK mirror effect controversy | 156.3 | Effectiveness is about 60%-80% |
| Eye protection desk lamp selection | 89.4 | AA level illumination standard attracts the most attention |
| screen time | 203.7 | Over 70% of teenagers spend more than 4 hours a day on average |
3. 4 steps to scientifically identify true and false myopia
1.Professional dilated optometry: Detection after drug paralysis of the ciliary muscle is the gold standard. The vision of patients with pseudomyopia can return to normal after dilation.
2.Eye axis length measurement: The eye axis of true myopia usually exceeds 24mm, and each 1mm increase increases myopia by approximately 300 degrees.
3.Corneal topography examination: Exclude organic diseases such as keratoconus, which may be mistaken for myopia.
4.Regular review and comparison: It is recommended to check every 3-6 months. True myopia will show a progressive worsening trend.
4. Three key periods to prevent myopia
| age group | Prevention and control focus | Recommended actions |
|---|---|---|
| 3-6 years old (preschool age) | Create refractive profile | Outdoor activities ≥2 hours a day |
| 7-12 years old (primary school) | Control the progression of myopia | Follow the 20-20-20 eye rule |
| 13-18 years old (adolescence) | Avoid high myopia | Annual axial growth ≤0.3mm |
5. Clarification of common misunderstandings
1."Reduced vision is myopia": Strabismus, amblyopia, and eye diseases may cause vision loss and require professional identification.
2."Wearing glasses will worsen myopia": Scientifically fitted glasses will not increase the degree of prescription, but can reduce visual fatigue.
3."Food therapy can cure myopia": Blueberries, carrots and other foods only supplement nutritional supply and cannot reverse true myopia.
4."Eye protection lamp can prevent myopia": High-quality light sources only reduce eye fatigue and cannot replace outdoor activities.
6. Eye care solutions recommended by experts
1. Ensure at least 2 hours of outdoor activities in the sun every day. This is the only proven effective preventive measure.
2. Keep a distance of more than 30cm when using electronic devices, and coordinate the screen brightness with the ambient light.
3. Establish the "Three Ones" standard: eyes one foot (33cm) away from the book, chest one punch away from the edge of the table, and fingers one inch away from the tip of the pen.
4. Ensure adequate sleep, 10 hours a day for elementary school students, 9 hours for junior high school students, and 8 hours for high school students.
5. If you have vision problems, go to a regular hospital in time to avoid believing in false propaganda about “curing myopia”.
Through scientific understanding and correct intervention, we can take the initiative in myopia prevention and control. Remember: early detection, early diagnosis, and early intervention are the most effective ways to deal with myopia.
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