Low vision and nearsightedness, what is the difference?

Low vision and nearsightedness, what is the difference?

Myopia is an eye disease in which parallel rays passing through the refractive system of the eye cannot be focused on the retina before they are focused on the retina, and the myopic eye has difficulty seeing the distance clearly and cannot see the near clearly. Hyperopia refers to the fact that after the parallel rays of light through the refractive system of the eye are focused on the retina, it is difficult for the farsighted eye to see far and near, and the main way to recover low vision is to cooperate with appropriate visual aids and carry out corresponding visual function training at the same time. Low vision training needs to be done by a professional optometrist or special education teacher.

Patients with low vision can go to the local ophthalmology low vision clinic, designated eye shop, and Disabled Persons' Federation Assistive Device Center for endoscopic optometry, glasses dispensing and training.

The main area of myopia and hyperopia**The main area of myopia is hereditary and poor eye habits in adolescenceHyperopia is mostly caused by shortening of the eye axis and insufficient curvature of the cornea, with hereditary symptomsThe main manifestations of myopia are that it is difficult to see far, it is obvious to see near and it is difficult to see close, but it is easy to fatigue and complications due to over-adjustment when looking at near myopia, which causes deformation of eye morphology and causes a variety of eye diseases, mainly vitreous and retinopathy, However, hyperopia generally does not cause deformation of eye morphology, but is mostly due to fundus disease with shortening of the eye axis, and the complications are mainly shallow anterior chamber and conjunctivitis.

The difference between myopia and hyperopiaAlthough there is a fundamental difference between myopia and farsightedness, both myopia and farsightedness are ophthalmic diseases, and both are related to vision. There is basically a difference between the two, people with myopia can only see things near their eyes, and farsighted eyes are the opposite, and if you see something in the distance, both diseases are serious. Therefore, it must be done right away**.

Such a disease can affect your daily life. Therefore, the sooner you do it, the less you need to delay. The situation will worsen if it is delayed.

The difference between low vision and myopia is that myopia is that there is a problem with the eyes, while low vision is that the vision of the eyes is not very good, and low vision is very easy**, and low vision can be corrected, but the difficulty of myopia correction will be very large, which is the difference between low vision and myopia.

Low vision: This is a condition in which vision cannot be improved through surgery**, medication**, or wearing glasses.

Myopia: Because the length of the eye axis increases, when the patient sees distant things, the focus of the object falls in front of the retina after the refraction of the eye, resulting in unclear vision, so the myopia can be corrected by wearing glasses.

This is mainly caused by your long-term reading, and most of them occur during the teenage years, which can be surgical**, while low vision can't**, and can only be done by using visual aids**.

Low vision is low vision in both eyes caused by visual impairment, or the visual field is narrowed to a certain extent that cannot be improved by wearing glasses, medications or surgery**, affecting the patient's daily life or social participation.

The World Health Organization's criteria for low vision are that the best corrected visual acuity in both eyes is less than, but greater than or equal to, low vision in both eyes.

Diseases that cause low vision include the following:

Uncorrected refractive errors lead to visual impairment, cataracts, glaucoma, age-related macular degeneration, diabetic retinopathy, trachoma, and corneal disease.

If you have low vision, you should go to the hospital in time, and the doctor will give you relevant examinations to make a clear diagnosis, and treat the cause and symptoms.

And carry out blindness prevention work, and carry out first-class training.

Low vision refers to visual dysfunction that cannot be improved by surgery, medication or general optometry glasses, mainly including the best corrected visual acuity of the good eye in both eyes is lower than the best corrected visual acuity and the visual field damage is less than 10 degrees. There are more than 10 million people with low vision disabilities in the country. Most of the patients are not equipped with visual aids and have undergone scientific ** training, and a considerable number of them are considered blind people who are unable to **, so they live in a dark and hazy world with the total blind patients.

In fact, blindness means not being able to see, while low vision means not being able to see clearly, seeing completely. Most of their eye diseases are preventable, avoidable, and avoidable, and patients with low vision can be liberated from the hazy world through ** services; Through the use of visual aids and various visual training, it helps patients improve their ability to use residual vision, readapt to the social living environment, improve their learning, work ability and quality of life, so that they can take care of themselves and become self-reliant, reintegrate into society, and become dignified people.

Low vision is when your vision is lower than normal. The World Health Organization defines best corrected visual acuity in both eyes as high or above, but low vision if it is below.

Low vision, visual disability, refers to the binocular vision impairment or visual field narrowing due to various reasons, through various drugs, surgery and other ** and can not restore visual function (or temporarily unable to restore visual function through the above-mentioned **), so that can not carry out work, study or other activities that ordinary people can do.

Low vision is a condition of visual function that cannot be improved by surgery, medications, or general optometry, and includes both low vision and reduced visual field. The traditional definition of low visual acuity refers to patients who have functional impairment even after surgery, medication, and standard refractive correction, and who have binocular best-corrected visual acuity less than or greater than or equal to, or visual field radius less than 10-15°, but who are able or have the potential to use their residual vision for a visual activity.

Low vision means that your vision is lower than normal, indicating that there is something wrong with your eyes. So if there is such a situation, be sure to go to the hospital for a detailed examination. Some routine eye examinations, such as refraction, can be done to check the eye for refractive errors, such as nearsightedness, farsightedness, or astigmatism.

Intraocular pressure is tested to find out if there are any diseases such as glaucoma. Slit-lamp examination can be done to see if there is a disease such as the anterior segment or cataract. Through fundus examination, we can find out if there are any fundus diseases, such as vitreous hemorrhage, retinal tears, retinal detachment, macular degeneration, diabetic retinopathy, etc.

Only by understanding the specifics, can we know how to restore normal vision, and do not blindly ** before a clear diagnosis.

The traditional meaning of low vision refers to visual dysfunction that cannot be improved by surgery, medications, or general optometry. These mainly include decreased vision and reduced visual field. People with low vision are different from blind people, and they are different from normal people.

The standard of low vision in our country: below and equal to or better than.

Low visual acuity indicates that the visual acuity is relatively high.

Serious problem.

It is often caused by an eye disease; It is necessary to go to the ophthalmologist for refraction, fundus and other examinations to clarify the cause of abnormal vision, and to go through wearing corrective glasses and surgery; Avoid low vision that persists and can affect the patient's life.

The traditional definition of low vision refers to visual dysfunction that cannot be improved by surgery, medication, or general optometry, mainly including vision loss and reduced visual field. In both eyes, the best corrected visual acuity of the good eye is lower than or equal to or better than that; Those with good eyes with lower best-corrected visual acuity in both eyes are called blind. The new definition refers to the fact that the patient has visual impairment even after ** or standard refractive correction, and his visual acuity is less than the light sense, or the radius of the visual field is less than 10 degrees, but he can still apply or have the potential to use his vision to do or prepare to do various tasks.

In children, it should be emphasized that near and functional vision include low vision that includes disabling contrast sensitivity and dark adaptation.

Our low vision standard: below and equal to or better than.

The traditional definition of low vision refers to visual impairment that cannot be improved by surgery, medications, or general optometry. People with low vision are different from blind people, and they are different from normal people.

According to the standard set by the World Health Organization (WHO), that is: the best corrected visual acuity of a good eye in both eyes 0 3 - 0 05 is low vision, visual acuity 0 05 - no light perception is blindness, both blind or low vision refer to both eyes, blindness plus low vision is a general term for visual disability.

Condition analysis of the top three: low visual acuity is through various ways, and the patient's best corrected visual acuity cannot be reached, but is greater than. Patients often present with decreased visual acuity and reduced visual field.

There are many causes of low vision, the most important ones are congenital eye structural defects, congenital cataracts, albinism, etc. Patients with low vision often have low vision, which affects their normal work and life. For patients with low vision, visual aids can be used to help patients better use residual vision and improve quality of life.

Low vision usually has these criteria, you can take a look at:

1. After going to the hospital to test your eyesight, you find that your visual acuity rating is less than - range, and the radius of your visual field is less than 5 degrees.

2. Low vision usually occurs in childhood, and the best period is before the age of 12. If this period has passed, it will be difficult for low vision to improve.

3. Various eye diseases, such as retinopathy, optic nerve atrophy, myopia, etc., are related to low vision, which is not a disease, but also a general term.

Before confirming low vision, you should usually protect your eyes, eat some bilberry lutein, improve the resistance of the eyes, and it is also a way to slow down the occurrence of low vision.

。Patients with low vision often suffer from low vision, which seriously affects the patient's daily life and needs the help of others to a certain extent, causing inconvenience to others.

Low vision is often secondary to various common eye diseases (such as retinopathy, macular degeneration, optic nerve atrophy, high myopia, farsightedness, astigmatism, etc.), and ophthalmic genetic diseases (such as albinism, congenital microphthalmia, microcornea, aniridia, nystagmus, etc.). When the usual methods are no longer enough to help you improve your vision, you can see a low vision clinic where you will get an unexpected benefit.

At present, there are many ways to reduce vision, which can help you improve your near and far vision to varying degrees. The method is mainly to use different types and uses of visual aids, any device or equipment that can improve the vision of patients with low vision is called a visual aid. Commonly used visual aids are:

glasses, monocular handheld, cassette telescopes; Near-use binoculars, hand-held magnifiers, vertical magnifiers, CCTV visual aids, etc.

Amblyopia is an absence of organic lesions of the eye. Low vision, on the other hand, refers to the level of binocular vision that cannot be improved by surgery, medication, or conventional refractive correction.

According to the criteria established by the World Health Organization (WHO) in 1973, low vision refers to those who are below or equal to or better than the best visual acuity, and those who are below the best visual acuity are called blind. In more detail, those with visual acuity below or equal to or better are classified as grade 1 (low visual acuity); Visual acuity below but equal to or better than grade 2 (low visual acuity); Visual acuity below but equal to or better than the index) is grade 3 (blind); Those with visual acuity below but equal to or better than light perception are grade 4 (blind); Those with no light perception are classified as level 5 (blind). All of the above are within the scope of visual disability.

It is important to note that both blind and low vision refer to both eyes, and the corrected visual acuity of the eye with better vision prevails. In addition, since the visual field is also a major aspect of visual function, although the central vision is good, the visual field is too small, which is also classified as visual disability.

If the radius of the field of vision is less than 10° but greater than 5°, it is grade 3 (blind), and if the radius of the field of vision is less than 5°, it is grade 4 (blind). In 1987, China also formulated the visual disability standard, which simplified the WHO standard to a certain extent, that is, the WHO level 1 is called the second level of low vision, the second level is called the first level of low vision, the third level is called the second level of blindness, and the fourth and fifth levels are combined as the first level of blindness. At the same time, it is stipulated that the international standard eye chart or the "Children's Graphic Vision Chart" developed by Sun Baochen should be used to check the eyesight of subjects over the age of 3.

Low vision is to correct the visual acuity to the following low vision and blind people, this vision value can not be helped by ordinary glasses, so special low vision and blind special visual aids are developed. Best corrected visual acuity in the amblyopia human eye.

Low vision aids are now technologically advanced, and in the past, they were hand-held optical magnifiers, electronic magnifiers, and telephoto aids; With the progress of science and technology, there are more than 10 kinds of technologies such as AI, optics, 5G, Internet of Things and sensing, etc., which have been integrated and developed with special desktop visual aids for students with glasses and low vision, to improve learning work efficiency, suitable for low vision and blind people with visual acuity. Support multi-magnification, photo album storage of class notes and other important information, children do not have to affect learning due to eyesight, solve the problem of not being able to see the blackboard clearly, keep up with the progress of the class, too late to take notes, etc., so that children with low vision can easily learn in normal school.

Kingfisher Vision Headset Low Vision Crowd Vision Aid, There are intelligent AI vision aids, both near and far, and Kepler periscope plus focusing pure optical visual aids. It can adjust the interpupillary distance pitch and pitch angle according to the binocular vision of different situations, such as the stairs are not clear, and the visual enhancement technology can improve the recognition of the stairs through a variety of color modes, and the low vision of visual field defects can be adjusted separately for different situations, and there are many functions.