UV is an invisible killer,

The eyes are exposed to strong sunlight,

Crystals in the eye can be exposed to too much ultraviolet light

And fiber hardening,

And the damage of ultraviolet to human eyes is cumulative,

It will develop some eye diseases,

Such as cataract, glaucoma, etc.

So what color of lens can protect the eyes most?

1 green lens

Green lens is the representative of pilot series, which can effectively absorb infrared light and 99% ultraviolet light. But green lenses can distort the color of certain scenes. Moreover, its light blocking effect is slightly inferior to that of gray lens, but green is still an excellent protective lens. Green has the function of adjusting eyesight, which is more suitable for students or people with tired eyes.

2 Grey Lenses

The Gray Lens absorbs any chromatogram evenly, so it will darken in case of strong light, but there will be no obvious color difference, showing the true natural feeling, belonging to the neutral color system. It can absorb infrared and 98% ultraviolet. The biggest advantage of gray lens is that the original color of the scene will not be changed by the lens, and the most satisfying thing is that it can effectively reduce the light intensity. Gray can reduce visual fatigue, white-collar workers with more eyes can consider.

3 yellow lens

It can absorb 100% ultraviolet light, and make infrared and 83% visible light penetrate the lens. The biggest feature of the yellow lens is that it absorbs most of the blue light. Because when the sun shines through the atmosphere, it is mainly blue light (which can explain why the sky is blue). After absorbing blue light, the yellow lens can make the natural scenery clearer. Therefore, the yellow lens is often used as a "filter". Yellow is the most sensitive color of visual cells, which can improve the sensitivity of vision. Amblyopia and other poor vision can be preferred.

4 Pink lenses

This is a very common color. It can absorb 95% of the ultraviolet light, and some shorter wavelengths of visible light. In fact, this kind of function is similar to that of ordinary uncolored lens, that is to say, pink lens has no greater protective effect than ordinary lens. But for some people, it's still psychologically helpful because they feel comfortable to wear. There are red and green color blindness or red and green weak person, can choose red lens, it can increase red and green contrast.

5 Brown lenses

This kind of lens absorbs almost the same kind of light as the green lens, but absorbs more blue light than the green lens. Brown lenses cause more color distortion than gray and green lenses, so the satisfaction of ordinary people is also low. But it provides another color choice, and can slightly reduce the blue light halo, making the image clearer.

6 Blue Lens

The beach can wear the sun blue lens, blue can effectively filter out the light blue reflected by the sea water and the sky. Avoid using blue lenses when driving, because it will make us unable to distinguish the color of traffic signals.

In addition to the traditional sunglasses, the so-called "anti radiation, anti blue light, anti fatigue, anti UV" anti blue light glasses have recently become the choice of many people.

The sunlight includes seven bands of "red, orange, yellow, green, blue, indigo and purple". Blue light is one of them, which has relatively high energy.

Blue light is a kind of normal visible light in daily life. The wavelength is about 400 nm, which just falls in the center of the eye, that is, the fovea of the macula. And this part itself is sensitive to strong light, which is mainly composed of optic vertebra cells. If it is stimulated by blue light for a long time, it will suffer some damage.

For people's concerns about the harm of blue light to eyesight, anti blue light glasses have no significant effect on eyesight protection. To protect eyesight, we should pay attention to the health eye, try not to use electronic products for a long time, and do not use the eye for a long time. 

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In a relaxed state, the parallel light passes through the refractive system of the eyeball and focuses in front of the retina, which is called myopia. Myopia is also called shortsightedness, because this kind of eye can only see near but not far. When the eye is resting, the parallel light from the infinite distance, after passing through the refraction system of the eye, gathers in front of the retina to form a focus, and forms an unclear image on the retina. The far vision is obviously reduced, but the near vision is still normal. There are many factors that cause myopia, one is genetic factor, the other is acquired external factor. Here we mainly explain the way to alleviate myopia caused by acquired factors.

(1) Relax:

① Mydriasis therapy: mydriasis with cycloplegia is used. At present, eye drops are given once a day.

2. Convex lens method: first let the patient wear a convex lens with a higher degree, watch the vision meter 5 meters away, relax the ciliary muscle, then adjust the degree of the convex lens, so that the eyesight is basically normal.

③ Overlooking method: after studying or writing for 1-2 hours, you can overlook the natural scenery and relax the ciliary muscles. Keep on doing eye exercises 3-4 times a day.

(2) To improve the excitability and visual function of the visual center:

Direct current therapy for myopia, ear acupuncture, plum blossom acupuncture, acupoint massage, acupoint conduction, Qigong therapy and cold water bath therapy. It is mainly to increase the excitability of the brain's optic center and optic nerve cells, which can improve both the near and far vision.

(3) Improve learning environment: keep a distance of 30cm and correct posture when reading and writing. Pay attention to the natural light and ensure adequate lighting in the room. Combine work with rest, get rid of bad study habits, take a rest of 10-15 minutes every hour, do not lie or walk to read. Pay attention to physical exercise

Of course, there are many specific methods, such as:

1: Stand somewhere, find a distant tree and a closer tree, and then observe the trees near for a while, and then observe the trees far away for a while. This method has the function of adjusting eye muscles and relaxing. When observing, try to look at the details of the tree as much as possible

2: Rub your hands and cover your eyes. Do it again and again. It's relaxing and comfortable. You can do it anytime, anywhere.

3: Sunbathe, when the weather is clear, close your eyes, face the sun, let the light through the eyelids, stimulate the eye cells. Our nearsighted people are very sensitive to light. They will squint or squint when they encounter strong light. This can improve the ability of our eyes to accept light.

4: Sit or stand, look straight ahead first, then move your eyes up, down, left and right, and stretch your eyes in each direction as much as you can, just for a few seconds in each direction. We will find that our eyes are deformed after myopia. This method can adjust our eyes back to normal shape and help to restore the focusing ability of the eyes.

5: More blinking, blinking can alleviate eye fatigue, this is to do at any time.

According to the above methods, combined with reasonable vision correction, I believe that you will feel that your eyesight has indeed improved after a period of time. My friends have tried it for a month, and the eyesight has dropped from the original 400 to 300 degrees. He is still insisting. Listening to him, the effect is very good. You may as well try it.

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The college entrance examination is over. We can relax completely! Although the college entrance examination is over, but the protection of our eyesight can never be relaxed. Myopia and bad eye habits are related to a certain extent. In the same way, bad eating habits can also become accomplices to induce myopia. To prevent myopia and keep away from the problems brought by myopia, we might as well start with eating first. These six kinds of food are eye protectors.

1. Vitamin A

Vitamin A plays an important role in the formation of human vision and participates in the synthesis of rhodopsin in retina. Lack of vitamin A will affect the adaptability of eyes in the dark environment, which is manifested as decrease, and even lead to night blindness. The foods with high vitamin a content include animal liver, cod liver oil, roe, whole milk and whole milk products, eggs, etc.

Carotene can be converted into vitamin A in human body, which is also called vitamin a source. Spinach, leek, pea seedling, alfalfa, green pepper, sweet potato, carrot, pumpkin, apricot, mango and other vitamin A sources are more.

2. Calcium rich food

Calcium is also known as the "protector" of eye tissue. If there is a lack of calcium in the body, it will lead to the decrease of the elasticity of the eye retina, the increase of the pressure in the crystalline body, the lengthening of the anterior and posterior diameter of the eyeball, and may also lead to the pathological changes of the cornea and ciliary muscles, so as to easily lead to vision loss or myopia.

The foods rich in calcium include milk, beans, fungi, dried fruits and marine products, and they can be used with vitamin D to help calcium absorption.

3. Foods rich in vitamin C

Persimmon pepper, tomato, lemon, kiwifruit, hawthorn and so on are rich in vitamin C. vitamin C can weaken the damage of light and oxygen to the lens of the eye and delay the occurrence of cataract.

4. Trace elements

Microelements mainly include selenium, zinc, chromium, etc., which can improve the function of eye tissue and prevent vision loss. Animal liver, egg, fish, shellfish, soybean, mushroom, asparagus, shepherd's purse, carrot, etc. contain more selenium; liver, kidney, seafood, milk, cereal, beans, hard fruit, etc. contain more zinc; beef, black pepper, brown rice, corn, millet, coarse flour, brown sugar, grape juice, edible fungus, etc. contain more chromium.

5. Kelp

In addition to iodine, mannitol contains one third of the "status" in kelp. There will be a layer of "white frost" on the surface of dried kelp, namely mannitol. Its effect is to reduce intraocular pressure, so it is helpful for the treatment of glaucoma. Seaweed products, such as Undaria pinnatifida, also contain mannitol, which is an adjuvant treatment for glaucoma.

6. Coarse grain and fresh vegetables

Most of the time, we advocate eating more coarse grains and fresh vegetables, because they contain vitamin B and vitamin C, which can play a role in eye protection.

Don't pay attention to these three points. Look out for myopia

1. Too sweet

Eat too much sweets, will consume a lot of vitamin B1 in the body, but also reduce the calcium in the body, weaken the elasticity of the eye wall, induce myopia.

2. Eating too well

The reason why eating too well is not good. This is because eating too well for a long time, especially for children, will lead to the lack of trace element chromium in their body, which will lead to the lens becoming convex, the diopter increasing, and induce myopia.

3. Eating too soft

Eating too soft is not good, it is reported that too little hard food intake is also one of the causes of juvenile myopia. 

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Nowadays, people use computers and mobile phones more and more. For a long time, playing and working without limit will cause our eyes to feel itchy, slight pain, vision loss and blurring. Therefore, it is very important to properly maintain our eyes. How to protect our eyes in daily life?

1. Take buckwheat skin, mung bean skin, black bean skin, cassia seed and chrysanthemum. The medicine is finely mixed and evenly mixed. It is put into a cloth bag to make a pillow. The pillow is covered with plastic bag and taken off at night. We have a clear vision.

2. This prescription is fumigated and washed with liquid medicine for external use. It can directly affect the eyes, increase the metabolism of the eyes, promote the blood circulation, and is very beneficial to the health care of the eyes. Wash Mungbean and chenjing rice and put them into the pot. Add 1000ml of water. Cook them into congee in high heat and low heat first, then put them into liver slices. The liver is cooked. Take it three times a day.

3. 2 chicken livers, 100g rice, a little salt. Chop the chicken liver and cook it with rice as porridge. When it is cooked, mix in salt and take it twice in the morning and evening. This prescription can increase the vision, especially for night blindness and people with dazzling eyes.

4. 120 g of Cistanche deserticola, 60 g of Morinda officinalis, 60 g of chrysanthemum and 60 g of Lycium barbarum. The 4 flavours are dried and dried together, and the white wax is used as a pill, such as Wutong. Take 15g / day, twice a day, dilute salt and boiled water. Our side is full of essence and bright moon, which is suitable for fainting.

5. This is the Cixi recipe proposed by Zhang Zhongzhi, a royal doctor of Qing Dynasty. It can be used as a daily health care prescription for eyes. 9 g for chamomile, 9 g for frost mulberry leaf, 3 G for mint, 1.5 g for antelope horn tip, 9 g for raw land and Prunella vulgaris. Pan fried, smoked and washed.

Daily eye care tips

1. When reading, whether it is physical books, e-books, computer screens, mobile phones or tablets, the light should be sufficient and have enough distance. It is recommended to take a rest every 30 minutes, close your eyes or look at distant scenery.

2. More outdoor activities, such as playing ball, and looking at distant scenery. Because outdoor activities involve focusing far and near and moving focus in all directions, the eye muscles can take the opportunity to relax and tighten.

3. You should wear sunglasses for outdoor activities. It is ideal to have UV400 degrees to completely block the UV, and you can also wear a hat, especially when the sun is strong at 12 noon. It is found that people who work outdoors and are exposed to sunlight but do not take corresponding eye protection measures will suffer from cataracts, wing flesh, macular degeneration and other problems earlier than ordinary people.

4. Do not rub your eyes often. Wash your hands frequently to reduce infection.

5. It's easy for computer workers to dry their eyes for a long time. When they need it, they can drop preservative free artificial tears and blink in the distance. Sometimes, when we focus on the computer screen, the number of blinks will decrease and lead to dry eyes. We found that the lower part of the cornea was very dry. The reason was that the eyelid was opened before it was completely covered, so that the tears were not enough to moisten the eyes.

6. If you find eye spots, blindfold, eye pain or dry eyes, you should see an ophthalmologist to check them out. If you have red eyes, you have the chance to have an eye infection, you must seek medical advice as soon as possible. You should not buy eyedrops randomly.

These prescriptions listed above will relieve our tired eyes to a certain extent. In addition, the most important thing is that when we read books or use computers in our daily life, we should adjust our suitable luminosity, and always wear sunglasses and other protective measures for outdoor sports. 

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Many people will wear glasses. Maybe everyone wants to ask if glasses need maintenance?

Now, glasses are very expensive. The price of a pair of glasses is hundreds or even thousands. Therefore, to pay attention to this lens, it is necessary to use special glasses cloth to wipe it. If there are some foreign matters on the mirror surface, such as sand, don't use this glasses cloth to wipe it directly. You should wash it and then wipe it.

When removing the frame, it's better to take it down with both hands at the same time. The mirror of the glasses should not be directly placed on the desktop. It should be directly placed in the glasses box after taking it down. Don't put the frame of the glasses in a place with high temperature or direct sunlight. This high temperature will cause the frame to deform. Then try not to let the frame touch some chemicals, cosmetics or sweat. It may cause the frame to age, accelerate or deform.

Do you know how to maintain your glasses now? 

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