I. What is myopia?
When the eye is at rest, parallel light rays are imaged in front of the retina after passing through the eye’s refractive system.
The danger of myopia is not that the prescription keeps rising, requiring frequent replacement of glasses, but that it brings about serious eye complications.
Retinal degeneration.
Retinal fissures, retinal detachment.
Bleeding in the fundus of the eye.
Retinal atrophy, post-scleral staphyloma.
Second, the factors affecting myopia
Heredity.
Physical constitution.
Environmental factors.
Diet and nutrition.
Genetic factors.
Light exposure.
Visual near time.
Third, environmental factors can be controlled to prevent myopia and prevent myopia from worsening, we can do the following.
1, increase outdoor activity time
After 40 minutes of study, take a 10-minute break outdoors, and spend 0,5-1 hours outdoors every day
Outdoor light intensity reaches 100,000 lux on sunny days, indoor light intensity is 30,000-50,000 lux; another outdoor light is compound light – red-orange, yellow, green, blue and purple, while indoor light is tricolor light, (red, green and blue), which is not good for eye development.
2.Reading requirements
(1) Light requirements
Reading light intensity needs 600 lux, indoor fluorescent illumination for 100 lux, so it is best to use a desk lamp for local lighting, 40-watt incandescent lamp 30-50 cm from the book, placed in the upper left corner of the desk, incandescent lamps both to ensure the intensity of light, light and softer, will not stimulate the eyes. It is not recommended to use energy-saving lamps.
(2) Distance requirements
Reading and writing three one: eye from the book a foot (33 cm), chest from the table a fist, hand from the pen tip an inch (3, 3 cm).
(3) Adjustment of pen grip posture
The picture on the left we can see that the fingers are not blocking the tip of the pen, and the picture on the right suggests that the thumb is resting on the index finger, blocking the tip of the pen.
IV. Dietary requirements.
1, prohibit high sugar, high salt diet, such as street snacks, fried, baked goods, etc..
2, can be appropriate to white chrysanthemum wolfberry infusion water to drink.
3, pork liver, chicken liver, etc. plus wolfberry rolling soup; carrot and mushroom steamed ribs, etc.
Five, daily exercise
1, often ping pong, badminton and other sports, the eye can be a far and a near coordinated activities.
2, at home, you can properly practice “cock-eye” exercise, 5 minutes each morning and evening.
3, do not easily believe in “myopia treatment device”, “Chinese medicine dressing”, “Chinese medicine massage” and other treatment, the principle of promoting blood circulation, relaxation adjustment, vision temporary recovery to a certain level, but the true myopia. The principle is to promote blood circulation, relax the regulation, the vision temporarily restored to a certain level, but the true myopia degree is not suppressed, and even relief is not.
Six, regular checkups at the hospital
1.Study of vision chart and vision screening from the age of 3.
2.Go to the hospital for eye examination before winter and summer vacations start to rule out eye diseases.
3.The first time to get glasses with dilated pupils to rule out pseudomyopia.
4.If it is true myopia, wear glasses in time.
5, every 3 months to half a year to do a vision check, the degree of change in time to replace the lenses.
7. Evidence-based medical research has proven that methods to inhibit myopia development are effective and have fewer side effects.
1, M choline receptor blockers: such as low concentration atropine eye ointment, tropine amide eye water, etc., can temporarily delay the development of myopia, mostly used for low and moderate myopia, but there are some adverse reactions (photophobia, blurred vision, light irritation macula, etc.), need to be used under the guidance of a doctor.
2.Progressive lenses: suitable for patients with internal obliquity within 400 degrees.
3.Keratomileusis (OK lens) and high oxygen permeable rigid corneal contact lens (RGP lens): children wearing OK lens, myopia deepening speed is significantly slower than children wearing ordinary glasses, is an effective means to control the development of myopia; RGP lens is mostly used for patients with high myopia, high astigmatism, myopia deepening too fast.