American printing house for the blind. What is legal blindness? When you visit your optician or optician for an eye recipe, you can immerse yourself in a new and unknown world. As your ophthalmologist will go through you and try to explain as much as possible, you may find that you need some answers to some eye questions you encounter in your life. One of those questions could be about this whole concept of legal blindness. Whether you are legally blind or not can affect a variety of things, from your ability to get a driver`s license or to get disability benefits from the State from the Social Security Administration. For this reason, it is important to understand if your eye prescription is considered legally blind. With this knowledge in hand, you can jump through some of these procedural hoops and get some of the benefits available if you are legally blind. If a person has a field of view as low as 20 degrees, they can see the things that are right in front of them without moving their eyes from side to side, but they can`t see anything from one side or the other (peripheral vision). A 180-degree field of view is considered normal. A severely restricted field of view is sometimes called tunnel vision.
It is almost impossible to drive safely. An estimated 1.1 million Americans are legally blind. Certain conditions, such as glaucoma, cataracts, diabetes, and macular degeneration, can affect your vision to the point where you can be diagnosed with the disease. Treatments for legal blindness vary depending on the cause and stage of the disease. Age-related eye conditions are usually prescription drugs or eye procedures to try to delay vision or prevent it from getting worse. There are many conditions that can cause legal blindness, but the most common are age-related eye diseases. Age-related eye diseases, which are the main causes of low vision and blindness, are: if you are completely blind, you will not be able to see the light or shape. Among people with eye diseases, only about 15% cannot see anything at all. If you`re legally blind, you can still see – but not so clearly. Part 1 of the U.S. definition of legal blindness states the following about visual acuity: Visual acuity refers to a person`s proximity to an object 20 feet away to see it in detail. Normal vision is measured at 20/20.
If you had a visual acuity of 20/80, it would mean that you would be able to see details from 20 feet away, just as a person with 20/20 or normal vision could see from 80 feet away. Did you know that the largest letter on the chart (an E on most of Snellen`s charts) corresponds to the 20/200 vision. If someone cannot distinguish this letter with his prescribed glasses, he is considered legally blind. According to the American Foundation for the Blind, the legal blind is not the same as completely blind, which is used to describe the inability to see anything with both eyes. Most legally blind people have some vision. Total blindness is the total absence of perception of light and perception of form and is recorded as „NLP”, an abbreviation of „perception without light”. These terms describe the ability to perceive the difference between light and dark or daylight and night. A person may have severely impaired vision and still be able to determine the difference between light and dark or the general source and direction of a light.
Most of our funding comes from people like you. Throughout 2020, we looked at the impact of COVID-19 on people who are blind or partially sighted and advocated for meaningful responses to the pandemic. This work is only possible thanks to the donations of people like you. If you appreciate the information you found on our website, please make a gift today! Few people today are completely without vision. In fact, 85% of all people with eye diseases have residual vision; About 15% are completely blind. You`ll be surprised to learn that it`s Uncle Sam, not the doctor, who defines whether you`re legally blind. An ophthalmologist will measure visual acuity and field of vision to determine if a person is legally blind. But where do you find that visual acuity number on your prescription? You will look at the first number of your left eye (called „OS”) and the right eye (called „OD”). This first number represents diopters, which are the unit used to measure the lens correction your eyes need.
If you see this number as -2.5 or less, you are in all likelihood legally blind. However, it is worth discussing this issue further with your optician or optician.