Blindness

Common Name(s)

Blindness

Blindness is the complete or partial loss of vision, also known as vision impairment. In the United States, legal blindness is defined as vision that is worse than 20/200, or vision loss that cannot be corrected using glasses or contact lenses. It can be caused by a number of eye conditions and diseases such as diabetes, glaucoma, cataracts, stroke, and birth complications. Head injuries, injuries to the eye and exposure to certain chemicals and toxins may also cause blindness. In underdeveloped countries, the leading causes include chlamydia (a sexually transmitted disease pregnant mothers can catch and pass down to their newborns), river blindness, and leprosy. It is important to note that 80% of all blindness is preventable or curable, as in cases caused by diabetes or chlamydia.

Blindness includes both partial vision loss, meaning difficulty with vision, or complete vision loss, meaning total lack of vision including an inability to see light at all. The most common symptoms of blindness are loss or lack of vision, cloudy vision, eye pain, and change in eye color. These symptoms can develop rapidly, slowly over time, or be present from birth depending on the cause. Blindness is diagnosed using an eye exam that measures the patient’s clearness of vision, strength of eye muscles, and reaction to light. Treatment for blindness depends on the cause and severity of the condition.

If you experience sudden vision loss, contact a medical professional immediately as this could be a sign of a serious condition. If you have concerns about your vision or have been diagnosed with diabetes, it is important to have regular eye checkups to prevent worsening or loss of vision. If you are pregnant, consult with your doctor to confirm all immunizations are up to date and to screen for sexually transmitted infections before delivery to prevent vision and other problems in your child. Support groups are also available for more resources and information.

Source: Advocacy organizations associated with the condition.

 

Advocacy and Support Organizations

 

Condition Specific Organizations

Following organizations serve the condition "Blindness" for support, advocacy or research.

Usher Syndrome Coalition

The Usher Syndrome Coalition's mission is to raise awareness and accelerate research for the most common cause of combined deafness and blindness. The Coalition also provides information and support to individuals and families affected by Usher syndrome.

Last Updated: 31 Oct 2014

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Oklahoma Family Network

To Provide emotional, informational and navigational support to those who have special health care needs or a disability, their families and the professionals who serve them. OFN promotes family/professional partnerships and family-centered care, assuring services are offered as recipients prefer..

Last Updated: 15 Apr 2013

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Xeroderma Pigmentosum Family Support Group

The Xeroderma Pigmentosum (XP) Family Support group exists to improve the quality of life persons of those persons with XP and other diagnosed UV light conditions

Last Updated: 2 Dec 2009

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Zellweger Baby Support Network

This organization was started by a small group of parents whose lives have been affected in some way by a rare disorder. Our gift, in honor of our children, was to start this site, so we can help families and to raise awareness of these rare disorders. If your child has been diagnosed with Zellweger syndrome, a peroxisomal disorder or another rare disorder, we are here to help you. You are not alone! Our mission is to promote, advance, and improve awareness of Zellweger syndrome and other peroxisomal disorders, to assist, support, and aid, financially or otherwise, individuals and families affected by Zellweger syndrome. We will help you learn more about these disorders. We will provide emotional support, and we can help you to create a journal site for your child so that family and friends can be kept up to date on your child. We will pray with you and for you as you journey through life with your special angel. We know this is a hard time for you; you want answers, informa

Last Updated: 20 Feb 2013

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General Support Organizations

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How do you compare to others with this condition?

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Advocacy and Support Organizations

 

Condition Specific Organizations

Following organizations serve the condition "Blindness" for support, advocacy or research.

Usher Syndrome Coalition

The Usher Syndrome Coalition's mission is to raise awareness and accelerate research for the most common cause of combined deafness and blindness. The Coalition also provides information and support to individuals and families affected by Usher syndrome.

http://www.usher-syndrome.org

Last Updated: 31 Oct 2014

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Oklahoma Family Network

To Provide emotional, informational and navigational support to those who have special health care needs or a disability, their families and the professionals who serve them. OFN promotes family/professional partnerships and family-centered care, assuring services are offered as recipients prefer..

http://www.oklahomafamilynetwork.org

Last Updated: 15 Apr 2013

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Xeroderma Pigmentosum Family Support Group

The Xeroderma Pigmentosum (XP) Family Support group exists to improve the quality of life persons of those persons with XP and other diagnosed UV light conditions

http://www.xpfamilysupport.org

Last Updated: 2 Dec 2009

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Zellweger Baby Support Network

This organization was started by a small group of parents whose lives have been affected in some way by a rare disorder. Our gift, in honor of our children, was to start this site, so we can help families and to raise awareness of these rare disorders. If your child has been diagnosed with Zellweger syndrome, a peroxisomal disorder or another rare disorder, we are here to help you. You are not alone! Our mission is to promote, advance, and improve awareness of Zellweger syndrome and other peroxisomal disorders, to assist, support, and aid, financially or otherwise, individuals and families affected by Zellweger syndrome. We will help you learn more about these disorders. We will provide emotional support, and we can help you to create a journal site for your child so that family and friends can be kept up to date on your child. We will pray with you and for you as you journey through life with your special angel. We know this is a hard time for you; you want answers, informa

http://www.zbsn.org

Last Updated: 20 Feb 2013

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General Support Organizations

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Scientific Literature

Articles from the PubMed Database

Research articles describe the outcome of a single study. They are the published results of original research.
The terms "Blindness" returned 1012 free, full-text research articles on human participants. First 3 results:

Prevalence and associated factors of low vision and blindness among patients attending St. Paul's Hospital Millennium Medical College, Addis Ababa, Ethiopia.
 

Author(s): Fashe Markos Cherinet, Sophia Yoseph Tekalign, Dereje Hayilu Anbesse, Zewdu Yenegeta Bizuneh

Journal:

 

Low vision and blindness are major public health problems. A vast burden of worlds visually impaired live in low-income settings especially in sub Saharan Africa. In such settings the blindness is associated with considerable disability and excess mortality, resulting in huge economic ...

Last Updated: 31 Dec 1969

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Causes of Permanent Severe Visual Impairment and Blindness among Jordanian Population.
 

Author(s): Basel Turki Baarah, Raed Ali Shatnawi, Ahmed Essa Khatatbeh

Journal: Middle East Afr J Ophthalmol. ;25(1):25-29.

 

To report the causes of permanent severe visual impairment and blindness among Jordanian blind people.

Last Updated: 31 Dec 1969

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A Novel Heterozygous Missense Mutation in Leads to Autosomal Dominant Riggs Type of Congenital Stationary Night Blindness.
 

Author(s): Christina Zeitz, Cécile Méjécase, Mathilde Stévenard, Christelle Michiels, Isabelle Audo, Michael F Marmor

Journal:

 

Autosomal dominant congenital stationary night blindness (adCSNB) is rare and results from altered phototransduction giving a Riggs type of electroretinogram (ERG) with loss of the rod a-wave and small b-waves. These patients usually have normal vision in light. Only few mutations ...

Last Updated: 31 Dec 1969

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Reviews from the PubMed Database

Review articles summarize what is currently known about a disease. They discuss research previously published by others.
The terms "Blindness" returned 82 free, full-text review articles on human participants. First 3 results:

The national and subnational prevalence of cataract and cataract blindness in China: a systematic review and meta-analysis.
 

Author(s): Peige Song, He Wang, Evropi Theodoratou, Kit Yee Chan, Igor Rudan

Journal: J Glob Health. 2018 Jun;8(1):010804.

 

Cataract is the second leading cause of visual impairment and the first of blindness globally. However, for the most populous country, China, much remains to be understood about the scale of cataract and cataract blindness. We aimed to investigate the prevalence of cataract and cataract ...

Last Updated: 31 Dec 1969

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Therapeutic avenues for hereditary forms of retinal blindness.
 

Author(s): Chitra Kannabiran, Indumathi Mariappan

Journal: J. Genet.. 2018 Mar;97(1):341-352.

 

Hereditary retinal diseases, known as retinal degenerations or dystrophies, are a large group of inherited eye disorders resulting in irreversible visual loss and blindness. They develop due to mutations in one or more genes that lead to the death of the retinal photoreceptor cells. ...

Last Updated: 31 Dec 1969

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Caring for Hereditary Childhood Retinal Blindness.
 

Author(s): Ruben Jauregui, Galaxy Y Cho, Vitor K L Takahashi, Julia T Takiuti, Alexander G Bassuk, Vinit B Mahajan, Stephen H Tsang

Journal: Asia Pac J Ophthalmol (Phila). ;7(3):183-191.

 

Inherited retinal diseases (IRDs) are a major cause of incurable familial blindness in the Western world. In the pediatric population, IRDs are a major contributor to the 19 million children worldwide with visual impairment. Unfortunately, the road to the correct diagnosis is often ...

Last Updated: 31 Dec 1969

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Clinical Trial Information This information is provided by ClinicalTrials.gov

Last Updated: 5 Feb 2018

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Development of a Cortical Visual Neuroprosthesis for the Blind
 

Status: Recruiting

Condition Summary: Blindness

 

Last Updated: 25 Oct 2017

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Early Feasibility Study of the Orion Visual Cortical Prosthesis System
 

Status: Recruiting

Condition Summary: Blindness, Acquired

 

Last Updated: 13 Jul 2018

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