History of Vision Correction? What is vision correction?

Just ask in the hospital about this.

There is no better person who is a lawyer on the planet, but I know that this is an example, and he can only control it now, and it is more difficult to correct it, for example, I think I may need to wait another decade or two, and I dare to make my own attempt when technology advances.

If you want to correct your eyesight, you can look at the green things more, and if you want to, try not to get closer to some computers or have radiant eyes, and don't stare at one place every day.

This is going to be serious until one day in 1910 in a foreign country.

Myopia has a certain understanding and elaboration in our land of China, as early as the Sui Dynasty: the earliest record of "symptoms of myopia in traditional Chinese medicine" and "eyes can not be farsighted" can be found in Chao Yuanfang's "Treatise on the Origin and Syndrome of Diseases" in the Sui Dynasty.

The Ming Dynasty further concretized myopia, and by the Qing Dynasty, it was the dynasty in which the term myopia was born; In the Ming Dynasty, Wang Kentang's "Criteria for Governance" called it "the evidence of being able to be close and timid", Fu Renyu's "Examination of Yaohan" called it "close look", and Huang Tingjing's "Eye Jing Dacheng" in the Qing Dynasty was called myopia.

In fact, it can be traced back to the earliest medical technique "Yellow Emperor Neijing", which clearly expounded the law of the development of life, and in "Su Wen: Ancient Innocence" and "Lingshu Tiannian Chapter", there are exquisite observations and scientific summaries of the life laws of human life, growth, strength, old age, and beyond.

Traditional Chinese medicine has long recognized that the visual functions of various animals, including the human eye, have evolved to adapt to the environment, especially sunlight.

However, China's modern optometry started late and has lagged behind foreign countries for a long time. After the reform and opening up, China's Wenzhou Medical College, Fudan University, Sun Yat-sen University, Tianjin Medical University and other famous universities have conscientiously summarized the experience and lessons of Western countries in vision optics, and the ophthalmology developed on the basis of ophthalmology refractive optics organically combines ophthalmology and optometry, and has risen rapidly since its inception in the 80s of the 20th century and began to form its own characteristics.

In recent years, China's school health, health education and promotion have developed rapidly and achieved remarkable results. However, the vision protection system of students in China needs to be improved urgently, and the cause of vision health education and promotion still needs to be developed and expanded. The separation of clinical, basic and preventive medicine limits the improvement of the overall performance of myopia prevention and treatment in China.

At present, more and more optometrists are recognizing the importance of public health measures to improve the visual health of students.

Myopia eye correction refers to refractive errors such as myopia, distance, and astigmatism in both eyes, which need to be corrected by wearing glasses, so that the vision of the eyes can be improved. Congenital or acquired hazards can cause refractive error, the most common is myopia, which will cause blurred vision, decreased vision of the eyes, eye fatigue, etc., after computer refraction or medical optometry, wear myopia glasses suitable for myopia, that is to say, after myopia correction, the overall goal of seeing the distance is clear and comfortable. Otherwise, the eyesight will deepen and decrease, and the degree of myopia will worsen, resulting in polarization.

You can go to the hospital for correction. I went to the hospital 350 degrees.

Corrected visual acuity is generally more common to people with refractive error than uncorrected visual acuity. Uncorrected vision is your actual vision, and corrected vision is the vision that is obtained after correcting the refractive error with glasses. In other words, corrected vision is the vision after wearing glasses.

There are currently three main methods used to correct refractive errors: wearing glasses, contact lenses (OK lenses), and laser surgery**. Wearing eyeglasses is still the most commonly used, and its disadvantage is that it affects the appearance, but as technology continues to advance, spectacle frames are getting lighter and lighter, and spectacle lenses have evolved from glass lenses to plastic lenses that are widely used today.

Wearing glasses is still the safest way to correct your vision.

Corrected visual acuity is the actual visual acuity compared to uncorrected visual acuity, and corrected visual acuity is the visual acuity obtained after the refractive error is corrected with glasses.

If there is a vision problem in the eye, in addition to wearing glasses to correct it, it is generally necessary to pay attention to the auspicious file letter

1. Pay attention to the time you spend with your eyes.

Every time you read a book or write a small time, you should let your child go outdoors for activities, do games, look into the distance, or observe the flowers and trees, so that the tense eye muscles are relaxed and fatigue is eliminated. In addition, it is necessary to make the child's life regular, have enough sleep, and let the eyes get enough rest.

2. Pay attention to the light of your eyes.

Do not allow your child to read or write in dark light or sunlight. If a 25-watt light bulb is used indoors at night, the distance between the book and the bulb should be within 1 meter. If you use a 60-watt bulb on a stool, the distance between the book and the bulb should be 1 2 meters.

Cloudy days, dusk, weak light in the moonlight, and strong light in the sun are not suitable for reading and writing. When watching TV, it is necessary to maintain a suitable distance, which should generally be 5 7 times the diagonal length of the phosphor screen. The time to watch TV should not exceed 2 hours at a time.

3. Pay attention to eye exercise.

Physical exercise can enhance blood circulation and metabolism, supply more nutrients to the eyes, and enhance the resistance of the eyes, which is an indirect exercise for the eyes. The direct exercise is eye exercises, which is based on the massage, massage, acupuncture and acupuncture acupuncture points of Chinese medicine, combined with jujube Kuanhui medical sports, which is a scientific method to protect eyesight. Parents should learn the basic knowledge of eye exercises, give specific guidance and often urge their children to do eye exercises, and persevere.

4. Pay attention to eye nutrition.

In order to protect children's eyes, children can eat more carrots, animal liver, lean meat, to supplement vitamin A, or regularly supplement the comprehensive nutrition of the eyes with Leyan vision nutrients, and at the same time, it is also necessary to appropriately consume millet, tofu, animal liver and other supplements of vitamin B2, so as to avoid night blindness, corneal malacia, red eyes, dry itching and other symptoms. Eating too much sugar will harm your child's eyesight, so your child's sugar intake should be controlled.

5. Pay attention to regular inspections.

Regular check-ups are due to the fact that children's eye structure, binocular visual function, and intelligence are still in the process of continuous development after birth, and the content of the examination is different at different ages. The usual age of ophthalmologic examination is generally 2-7 days after birth, 42 days after birth, 3 months, 6 months, and 1 year of age, and then once a year. In this way, the problem can be detected early and corrected early, instead of waiting until the vision has deteriorated and there is a vision problem before going for a check-up.

Corrected vision refers to the vision obtained by wearing glasses or other means to correct refractive errors.

The general standard for visual acuity in the physical examination of civil servants is that the corrected visual acuity of both eyes is lower than the decimal visual acuity, the corrected visual acuity of the other eye is lower than the decimal visual acuity, and those who are blind in one eye and the other eye are less than the decimal visual acuity.

Corrected visual acuity refers to the inability of the eye to see without any external assistive devices. At this time, it is necessary to correct the vision with the lens by the method of measuring the ruler and the light, and the vision that can be achieved through the lens is called corrected vision.

There are many kinds of lenses, the most common are farsightedness, myopia, astigmatism, these three types of lenses can correct the situation is basically a simple refractive error. Partial mixed astigmatism is relatively difficult to correct, and only refractive error can be corrected with lenses.

In other words, corrected vision is the vision after wearing glasses. Visual acuity measured without glasses is called unaided visual acuity. For example, if a myopic patient does not wear glasses, and the vision is achieved after wearing glasses, the former is called uncorrected vision, and the vision after wearing glasses is called corrected vision.

Some people think that the meaning of "correction" means that vision will be restored (corrected) after wearing glasses, for example, the myopic eye mentioned above will be "corrected" by wearing glasses, and the vision will be corrected after wearing glasses, but this is a wrong concept.

Correction of refractive errors in the eye by some means.