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  2. Blindness can be classified into different levels123:
    • Partial blindness: You still have some vision.
    • Complete blindness: You can't see or detect light.
    • Congenital blindness: This refers to poor vision that you are born with.
    • Legal blindness: This is when the central vision is 20/200 in your best-seeing eye even when corrected with glass or contact lenses.
    • Nutritional blindness: This term describes vision loss from vitamin A deficiency.
    In the United States, a person with 20/200 in the BETTER eye is considered legally blind1. 20/500 to 20/1,000 is considered profound visual impairment, or profound low vision1. Less than 20/1,000 is considered near-total visual impairment, or near total blindness1. No light perception is considered total visual impairment, or total blindness1.
    Learn more:
    In the United states, a person with 20/200 in the BETTER eye is considered legally blind. 20/500 to 20/1,000 is considered profound visual impairment, or profound low vision less than 20/1,000 is considered near-total visual impairment, or near total blindness no light perception is considered total visual impairment, or total blindness.
    www.teachingvisuallyimpaired.com/vision-classifica…

    Types of blindness

    • Partial blindness: You still have some vision. ...
    • Complete blindness: You can't see or detect light. ...
    my.clevelandclinic.org/health/diseases/24446-blind…

    Distance vision impairment:

    • Category 0: No or mild visual impairment –presenting visual acuity better than 6/18
    • Category 1: Moderate visual impairment –presenting visual acuity worse than 6/18 and better than 6/60
    en.wikipedia.org/wiki/Visual_impairment
     
  3. People also ask
    What is the acuity level for blindness?Because the ICD definition and WHO recommend use of a visual acuity level less than 3/60 to define blindness [ 1 ], many population-based surveys from less developed countries have reported blindness rates with this definition in the past [ 4 ].
    What are the chances someone with glaucoma will go blind?
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    Dr. Ilya Aleksandrovskiy

    M.D., MBA · 5 years of exp

    In glaucoma, sight impairment is more common than complete blindness. Although blindness is still possible in rare cases, statistics show around 5% of glaucoma patients will always go blind.
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    microsoftstart.msn.com
    What is the cut-off level of visual impairment to define blindness?Second, the cut-off level of visual impairment to define blindness in the International Statistical Classification of Diseases is visual acuity less than 3/60 in the better eye, but with increasing human development the visual acuity requirements are also increasing, suggesting that a level less than 6/60 be used to define blindness.
    How common is blindness?Blindness is common throughout the world and in the U.S. It can happen to anyone. In the U.S., about 1 million people are blind. Experts expect this number to double by 2050. There are many more people with low vision. Around the world, an estimated 43 million people are living with blindness.
    What is total blindness?Total blindness describes those who have a complete lack of light perception, documented as no light perception (NLP). Only about 15% of people with eye disorders have total blindness, and the majority of those with visual impairment have some level of vision.
    How do people categorize blindness?People can categorize blindness based on its cause or whether a person has complete or partial blindness. Blindness is a general term that includes people with low vision and those who cannot see. A wide range of conditions can cause it in newborns, children, and adults. This article will discuss types of blindness and some examples of its causes.
     
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  14. Low Vision and Legal Blindness Terms and Descriptions

    WebLow Vision vs. Legal Blindness "Legal blindness" is a definition used by the United States government to determine eligibility for vocational training, rehabilitation, schooling, disability benefits, low vision devices, and tax …

  15. Visual Impairment: What Is Impaired Vision? - All About Vision

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  17. What Are the 7 Causes of Blindness? - Healthline

  18. Blindness and vision loss: MedlinePlus Medical Encyclopedia

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  20. Blindness | Causes, Treatment & Prevention | Britannica

  21. Vision Classifications - Teaching Students with Visual Impairments

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