Legal blindness is a term that applies to people with a certain threshold of visual impairment (vision 20/200). Remarkably, legal blindness is not the same as total blindness, where a person cannot see anything at all. A person who is legally blind may have some vision and perhaps see things like shapes and colors. Legal blindness can be the result of accidents or eye diseases, including cataracts and age-related macular degeneration. Those who are legally blind may be entitled to disability benefits such as those offered by the Social Security Administration in the United States. Various government agencies and non-governmental organizations also offer benefits and assistance, including low-visibility aids and other tools or resources to improve daily functioning. The visual impairment must be medically verified and validated by an optometrist or other physician in order for the person to receive benefits. A common test for visual acuity is Snellen`s eye chart. Someone who is legally blind could simply read the top row of the chart, a capital E, while wearing corrective lenses. The line under the capital E is the line for 20/100.
There are also tests that can measure between 20/200 and 20/100. Someone who can`t see the line for 20/100 but sees somewhere between 20/100 and 20/200 would still meet the government`s standard of legal blindness, which is why they are listed as “20/200 or less.” If you`re not completely blind yet, but your vision isn`t what it used to be, you probably fall into the category of visually impaired adults. Visual impairment is sometimes referred to as “partial blindness”, but because the term is not necessarily accurate, “visual impairment” is preferred. For more information on definitions of statutory blindness, see Assessment of Disability in Social Security, a publication of the Social Security Administration. If you are completely blind, you cannot see any light or shape. Among people with eye diseases, only about 15% can see nothing at all. If you are legally blind, you can still see, but not so clearly. Not all ophthalmologists agree with an exclusively numerical description (or visual acuity) of visual impairment. Here`s another—more functional—definition of visual impairment: The Iowa Department for the Blind also serves people who are functionally blind. A person is functionally blind when they have to use so many alternative techniques to perform tasks that are normally performed with vision that their daily lifestyle is significantly altered. These alternative techniques could include reading a newspaper while listening to the phone or using Braille to read a book. Basically, if it`s at least 20/70, can`t be corrected — even with touches, glasses, or surgery — and interferes with your daily activities, it can legally be considered a “visual impairment.” Legal blindness does not mean that someone cannot see anything at all.
In fact, most people who are legally blind retain some eyesight. You can see objects directly in front of you, but not on the sides (tunnel vision). Or they have good peripheral vision but have difficulty seeing objects directly in front of them (loss of central vision). In most cases, people who are legally blind have their field of vision so narrow or blurred that daily activities are made more difficult. Some people also have blind spots that can`t be corrected with glasses or contact lenses. For people with legal blindness, different treatment options are available depending on the cause of their visual impairment. However, in some cases, such as retinal degeneration disorders, the symptoms can be treated, but there is no cure. Legal blindness includes total blindness, but not all people who are legally blind are completely blind. Many blind people, for example, can see shapes and colors.
According to the American Foundation for the Blind, legally blind is not the same as completely blind, which is used to describe the inability to see anything with both eyes. Most people who are legally blind have some eyesight. Most surveys and studies show that the majority of people living in the United States with vision loss are adults who are not completely blind; Instead, they have what`s called poor eyesight. You may have heard the terms “partial vision” or “partial blindness” or even “poor eyesight,” which are also used to describe low vision. However, these descriptions are no longer commonly used. Treatments for legal blindness vary depending on the cause and stage of the disease. Age-related eye conditions are usually prescription medications or eye procedures aimed at delaying or preventing vision from getting worse. As in the past, legal blindness continues to be defined as the best corrected visual acuity of 20/200 or less in the best eye; or a limitation of the field of vision so that the widest diameter of the field of view on the best eye tends to be an angle not exceeding 20 degrees, measured with a Goldmann III4e stimulus or equivalent size. American printing house for the blind. What is legal blindness? Normal visibility is 20/20.
This means that you can clearly see an object from 20 feet away. If you are legally blind, your vision is 20/200 or less in your best eye or your field of vision is less than 20 degrees. That is, if an object is 200 feet away, you must stand 20 feet away from it to see it clearly. But a person with normal vision can stand at 200 feet and see this object perfectly. Legal blindness occurs when a person has a central visual acuity (vision that allows a person to see right in front of them) of 20/200 or less in their best eye with correction. With a visual acuity of 20/200, a person can see at 20 feet what a person with a vision of 20/20 sees at 200 feet. Total blindness is the complete absence of light perception and shape perception and is recorded as “NLP”, an abbreviation for “no light perception”. Eye trauma or injury and genetic diseases, such as Usher syndrome, can also lead to legal blindness. If you learn that you are legally blind, organizations like the American Foundation for the Blind can help. They have programs to help you cope with the physical and emotional effects of vision loss.
A visual acuity exam is an eye exam that tests a person`s ability to identify the shapes and details of objects presented. Visual acuity is expressed as a fraction. A person with normal vision will have a visual acuity of 20/20. A person is considered legally blind if a visual impairment limits vision to 20/200 or one-tenth of normal vision. Visual impairment, on the other hand, is defined as 20/70 vision in the best eye with glasses or contact lenses.