First, the color of white eyes.
White eyes, medically called sclera. Under normal circumstances, the gloss is good, the color is China white, and there are no bloodshot and spots.
Second, the cornea is transparent.
The cornea is a completely transparent film at the front end of the eye, so from the appearance, the eye is black, which is actually a manifestation of the tissue in the eye.
Once corneal infection, trauma, degeneration, etc. , may make the transparent cornea appear gray and white turbidity, leading to blurred vision, decline, and even blindness in severe cases.
Third, the pupil is normal.
Under normal circumstances, Asian primary school students are mostly brown, while western countries are mostly blue. Of course, if you wear cosmetic contact lenses, that's another matter.
In addition to physiological adjustment changes, once there is asymmetry between the pupils on both sides, abnormal pupil color, abnormal pupil shape, slow response to light or disappearance, we should be alert to whether there is a problem with our health!
Fourth, good visual function.
Including vision, binocular vision function, contrast sensitivity, color vision, visual field and so on.
No.65438 +0 vision
Vision is an important indicator to judge the health of vision, but it is not the only measure.
That is to say, sometimes, although the vision can reach 1.0, there may be other visual defects, and the eyes are still unhealthy.
No.2 binocular vision function when we look at things, the images formed by external objects in the corresponding parts of the retina of both eyes are fused into one through the visual center of the brain, which makes people feel that they are not two separate objects, but a complete three-dimensional image. This function is called binocular vision.
Binocular function is the basis of binocular vision. Only with normal binocular function can we enjoy comfortable and lasting vision.
No.3 contrast sensitivity is the ability of people to see large fuzzy targets clearly. You can not only feel the light of an object, but also distinguish it and know its shape.
No.4 color vision most people can distinguish various colors, which is called normal color vision, but some people can't distinguish various colors, which is called color blindness.
Some people can distinguish most colors, but they can't distinguish red from green. This is called red-green color blindness.
Fifth place Shi Ye.
2. What is the healthy environment of our eyes at present?
The visual environment has seriously threatened people's healthy life and work efficiency, causing a lot of losses to people every year. According to experts, noise pollution in the visual environment can be roughly divided into three types: one is outdoor visual environment pollution, such as building exterior walls; Second, indoor visual environment pollution, such as indoor decoration, indoor bad light and color environment. Third, local environmental pollution, such as books, paper and some industrial products.
3. What is eye fatigue?
Excessive use of eyes can lead to eye fatigue, which is a common eye disease. Dry eyes, sore eyes, blurred vision and even decreased vision caused by eye fatigue directly affect people's work and life. Eye fatigue is mainly due to the fact that when people concentrate on the computer screen, the number of blinks decreases, resulting in a corresponding decrease in tear secretion, and the flashing screen strongly stimulates the eyes. It will cause pain in the neck, shoulders and other corresponding parts, and it will also cause and aggravate various eye diseases.
4. What is the effect of electronic products on eyes?
Electronic products will have an impact on vision, because long-term use of electronic products will cause oppression to the eyes, resulting in insufficient blood supply. After a long time, the blood supply to the eyes will be insufficient, causing swelling and pain, and ghosting will occur. Suggestion: children are small and their lenses are clear. Don't use electronic products for a long time, which will cause irreversible damage to children's eyes.
5. The explanation of dry eye and floaters.
Dry eye refers to an eye disease characterized by dry eyes caused by many factors, often accompanied by itchy eyes, foreign body sensation, burning sensation, or photophobia, blurred vision and vision fluctuation. Common symptoms include dry eyes, easy fatigue, itchy eyes, foreign body sensation, burning sensation, sticky secretions, fear of wind, photophobia and sensitivity to external stimuli; Sometimes the eyes are too dry and the basic tears are insufficient, but it stimulates the secretion of reflective tears, leading to frequent tears; In severe cases, the eyes will be red and swollen, keratinized, corneal epithelium will rupture, and silk adhesion will appear. This kind of injury can cause keratoconjunctival lesions and affect vision for a long time.
Floaters are a very common eye disease. According to the data, most middle-aged and elderly people over 40 have such symptoms. Patients with high myopia, patients who have undergone cataract surgery, and other patients such as endophthalmitis or retinopathy can also form this disease.
6. What are the manifestations of eye fatigue?
Eye fatigue, also known as visual fatigue, is a common eye disease. Symptoms of visual fatigue include dry eyes, dry eyes, sore eyes, blurred vision and even decreased vision, which will directly affect our work and life.
7. What's the matter with eyes turning yellow? Why are eyes always covered with red blood?
"Generally speaking, yellow eyes are divided into two situations, non-pathological and pathological. If the yellow eyes are pathological, we should pay attention to them. Chinese medicine believes that "the liver can see blood when it opens its eyes." "If it is non-pathological, as long as you pay more attention to diet at ordinary times, you can gradually recover. Therefore, pathological yellow eyes should be treated in time to rule out the possibility of liver lesions as soon as possible.
There are many red bloodstains in the eyes, which may be caused by factors such as lack of sleep or eye fatigue, or by rubbing the eyes too much. You'd better go to the hospital for an eye examination. You must form good habits, don't use your eyes for a long time, and do more outdoor sports.
8. What is the relationship between diet and eyes?
Myopia patient
Eating fish, cereals, citrus fruits and red fruits often has a good effect on preventing vision loss. Myopia patients should also eat less sweets and full-fat cheese. Eating too much will deepen myopia.
Dry eye patient
When eyes are dry, eat more fruits, especially citrus fruits, and eat more green vegetables, cereals, fish and eggs. In addition, drinking more water also helps to relieve dry eye.
Hyperopia patient
Hyperopia patients should eat more garlic, onions and dairy products (skim milk), dried fruits, animal livers and polished rice. Eat less high-fat food. In addition, eat less greasy food, try not to drink tea, coffee and wine, and quit smoking.
Glaucoma patient
Glaucoma is generally caused by high intraocular pressure. In order to reduce intraocular pressure, we should eat more kelp. Besides iodine, kelp also contains 1/3 mannitol. There is a thick layer of "frost" on the surface of dried kelp, which is mannitol in kelp. Mannitol has diuretic effect, which can reduce intraocular pressure and has a good effect on the treatment of acute glaucoma. Other seaweeds such as Undaria pinnatifida also contain mannitol, which can also be used as an auxiliary food to treat acute glaucoma.
Presbyopia and cataract patients
Drink plenty of water for both, at least 300 ml of water every day. Eat more fruits, especially citrus fruits and grapes, lemons, bananas and apricots. In addition, always eat foods containing calcium, avoid eating fat and sugar, and don't smoke or drink.