THE ACHROMATOPSIA NETWORK A network for individuals and families affected by the vision disorder including rod monochromacy Category Health Conditions and Diseases achromatopsiaA network for individuals and families affected by the vision disorder achromatopsia(sometimes called achromatopia), including rod monochromacy and blue cone http://www.achromat.org/
Extractions: (2) To make connections with persons who may wish to join this network. Individuals who have achromatopsia and families with children or teens who have achromatopsia are invited to become members of the network. Interested professionals involved in providing services or products to the visually impaired are invited to become "Friends of the Achromatopsia Network." (See How to participate in the network. Table of Contents What is achromatopsia? The development of the Achromatopsia Network Purposes of the network and of the network publications Information about what is offered and about ways to connect with the network Subjects with which our network and publications for the network are concerned special needs of persons with achromatopsia Possibilities for networking Who's in the Achromatopsia Network?
Incomplete And Complete Achromatopsia Describes the differences between the conditions and its significance. http://serendip.brynmawr.edu/bb/neuro/neuro98/202s98-paper2/DeCastro2.html
Extractions: This paper was written by a student in a course at Bryn Mawr College, and reflects that student's research and thoughts at the time the paper was written. Like other things on Serendip , the paper is not intended to be "authoritative" but is instead provided to encourage others to themselves learn about and think through subjects of interest, and, by providing relevant web links, to serve as a "window" to help them do so. Web links were active as of the time the paper was posted but are not updated. Biology 202 On Serendip The human eye requires both rods and cones for normal vision. Over 100 million rods are located in the periphery of the human eye, and about 6 million cones compose the fovea. Rods, the more sensitive of the two to light, are not able to differentiate wavelengths, thus cannot detect color, and perceive shades of grey, black, and white. Cones, on the other hand, are of three types, containing particular pigments. They are categorized as red, blue, and green depending on to which wavelength they are most sensitive. These cones are what render color vision to humans. Red-green color blindness is not uncommon in the general population. The unequal crossover in the X-chromosome which causes this disorder is much more easily achieved than the mechanisms which cause other types of color blindness, due to the proximity of the two pigment genes. Five to eight percent of men are affected with this genetic condition, and due to a lacking pigment, have trouble distinguishing between red, green and brown.
The Achromatopsia Group Internet resource center, support group, and discussion forum for people affected by the rare vision disorder. http://www.achromatopsia.org/
Extractions: Internet Resource Center Discussion Forum Welcome to the recently formed consolidated internet resource center , support group, and discussion forum rod monochromacy, which affects approximately 8,500 persons in the United States (about 1 in 33,000). Typical symptoms of achromatopsia include photophobia (hypersensitivity to light), color blindness, poor visual acuity, and nystagmus (wobbly eyes). This is a result of few or no cone photoreceptor cells in the retina. People with achromatopsia depend on their rod photoreceptor cells which do not provide color or detail vision, and become saturated by light. Coping with hypersensitivity to light is a major issue. Our Mission and Goals
WHAT IS ACHROMATOPSIA? What Is achromatopsia? Persons with complete achromatopsia must rely on their rod vision. In the normal eye there are 100 million rod photoreceptors. http://www.achromat.org/what_is_achromatopsia.html
Extractions: What Is Achromatopsia? Congenital achromatopsia is a rare hereditary vision disorder which affects 1 person in 33,000 in the U. S. The incidence varies in different parts of the world. Persons who have achromatopsia do not have normal "cone vision." In normal eyes there are 6 million cone photoreceptors, located mostly at the center of the retina. Persons with complete achromatopsia must rely on their "rod vision." In the normal eye there are 100 million rod photoreceptors. Rods are located mostly at the periphery of the retina. Rods "saturate" at higher levels of illumination. Rods do not provide color vision or good detail vision. Therefore, persons with achromatopsia are either totally colorblind or almost totally colorblind, and they have poor visual acuity. Without normal cone vision, their eyes are not able to adapt normally to higher levels of illumination. There are many variations in the severity of these symptoms among individual achromats. There are complete rod monochromats, incomplete rod monochromats, and blue cone monochromats. Complete rod monochromats have the most severely impaired vision of all achromats. Various diagnostic terms have been applied to patients who have congenital achromatopsia. Some of these terms have been applied inaccurately (misdiagnosis has been a common problem for members of our network), and some of the terms simply demonstrate the fact that the nomenclature in use can vary considerably among different vision care specialists and in different parts of the world. Sometimes a patient with rod monochromacy is diagnosed as having cone dystrophy, because some vision care professionals are accustomed to thinking of all patients with inherited disorders of the cones as having cone dystrophy. Congenital achromatopsia, however, should never be confused with progressive cone dystrophy or cone/rod dystrophy. Congenital achromatopsia the condition for which this network was established is not progressive, and it does not lead to blindness. Some doctors refer to it as "stationary cone dystrophy."
Achromatopsia achromatopsia. rod monochromacy and blue cone monochromacy http://www.kumc.edu/gec/support/achromat.html
Achromatopsia achromatopsia achromatopsia From the Online Mendelian Inheritance in Man From the Online Mendelian Inheritance in Man Back http http://www.doctorpage.com/findit/Diseases_and_Conditions/Achromatopsia
The Family Village / Library / Achromatopsia Who to Contact The purpose of this Network is to provide information about achromatopsia, The achromatopsia Network, and the publications that are available through the network. http://familyvillage.wisc.edu/lib_achr.htm
Extractions: Website: http://www.achromat.org/ The purpose of this Network is to provide information about achromatopsia, The Achromatopsia Network, and the publications that are available through the network. In addition, it seeks to make connections with persons who may wish to join this network. Individuals who have achromatopsia and families with children or teens who have achromatopsia are invited to become members. Interested professionals involved in providing services or products to the visually impaired are invited to become "Friends of The Achromatopsia Network." Persons who are affected by other eye conditions which cause vision problems similar to those caused by achromatopsia, such as hypersensitivity to light and total or almost total colorblindness, are also welcome to connect with this network. We are unaware of any discussion groups or forums specifically for this diagnosis. However, there are several forums that may be of interest to parents of children with disabilities or special health care needs regardless of diagnosis. See
Links Page - The Achromatopsia Group The achromatopsia Group Internet Resource Center Back to Main PageDiscussionForum. Please email suggested links to webmaster@achromatopsia.org. http://www.achromatopsia.org/links.htm
Extractions: (achromatopsia, related disorders, support organizations, low vision resources, education resources, and research articles) Please email suggested links to webmaster@achromatopsia.org The Achromatopsia Network - EXCELLENT site containing the most accurate and comprehensive information available on the subject of achromatopsia (e.g. go to " What Is Achromatopsia? "). Offers several superb publications, including Understanding And Coping With Achromatopsia Living With Achromatopsia Complete Colorblindness , and The Island Of The Colorblind (by Oliver Sacks) , as well as The Achromatopsia Network Journal newsletter. This should be the starting point for anyone wanting to learn more about achromatopsia Vision In A Complete Achromat: A Personal Account - By Knut Nordby. An autobiographical description of how an achromat from Norway has coped with achromatopsia. Note: this article is listed with the permission of Knut Nordby.
Achromatopsia Serendip. achromatopsia. Marion Howard. cones. The symptoms of achromatopsiaprovide an excellent illustration for the functioning of rod vision. http://serendip.brynmawr.edu/bb/neuro/neuro99/web2/Howard.html
Extractions: On Serendip When I was young, I was told that "color blindness" did not mean that the person saw the world like an old movie, but rather it meant that they could not distinguish between green and red. I thought that this understanding was very advanced and would quickly share my knowledge with any less-informed children. After looking into the matter, I have been forced to reject this generalization in favor of a broader range of diseases resulting in very different types of inabilities to perceive color in a "normal" fashion. While the typical color blindness I was told about affects 8 percent of men and less than 1 percent of women in the United States , there are many other types. The most common types of color blindness, effecting red and green vision, are not too serious for the sufferers, who can function normally and do not have overly impaired vision other than an inability to distinguish between certain colors. There are, however, more serious forms of "color blindness", such as blue cone monochromatopsia, partial rod monochromatopsia, and total rod monochromatopsia . The rod monochromats are also known as achromats, meaning they see no color at all. Only about 1/33,000 Americans has this disease, and women and men are effected roughly equally
HealthlinkUSA Achromatopsia Links Try it, you'll love it! AhHa. Click here for page 1 of achromatopsiainformation from the HealthlinkUSA directory. Save on Drugs Here. http://www.healthlinkusa.com/Achromatopsia.htm
HealthlinkUSA Achromatopsia Links packages. AhHa. Click here for page 1 of achromatopsia informationfrom the HealthlinkUSA directory. Save on Drugs Here. Accutane; http://www.healthlinkusa.com/2ent.htm
The Family Village / Library / Achromatopsia Library A B. achromatopsia. achromatopsia Network PO Box 214 Berkeley, CA94701-0214 E-mail Editor@achromat.org Website http//www.achromat.org/. http://www.familyvillage.wisc.edu/lib_achr.htm
Extractions: Website: http://www.achromat.org/ The purpose of this Network is to provide information about achromatopsia, The Achromatopsia Network, and the publications that are available through the network. In addition, it seeks to make connections with persons who may wish to join this network. Individuals who have achromatopsia and families with children or teens who have achromatopsia are invited to become members. Interested professionals involved in providing services or products to the visually impaired are invited to become "Friends of The Achromatopsia Network." Persons who are affected by other eye conditions which cause vision problems similar to those caused by achromatopsia, such as hypersensitivity to light and total or almost total colorblindness, are also welcome to connect with this network. We are unaware of any discussion groups or forums specifically for this diagnosis. However, there are several forums that may be of interest to parents of children with disabilities or special health care needs regardless of diagnosis. See
Achromatopsia And Color Blindness achromatopsia. Individuals who have achromatopsia and families with childrenor teens who have achromatopsia are invited to become members. http://www.lowvision.org/achromatopsia_and_color_blindnes.htm
Extractions: THE ACHROMATOPSIA NETWORK The purposes of this page are: To provide information about achromatopsia and about the Achromatopsia Network, and To make connections with persons who may wish to join this network. Individuals who have achromatopsia and families with children or teens who have achromatopsia are invited to become members. Interested professionals involved in providing services or products to the visually impaired are invited to become "Friends of the Achromatopsia Network." Achromatopsia With my various interests in cognitive science and the philosophy of mind, achromatopsia caught my eye rather quickly. It is a disorder - when congenital or accidental - that affects consciousness in a very particular and peculiar way. It constitutes a difference in qualitative experience! A person with achromatopsia sees the world differently than a person without it. In fact, the difference in their perceptions affects the way they interact with the world; the behavior of an achromatope is a telling blow against the claim that phenomenal consciousness is causally irrelevant.
Achromatopsia achromatopsia, Day night. A person with achromatopsia does not have normalcone vision, which makes them rely mainly on their rod vision. http://eyeconditions.homestead.com/Achromatopsia.html
Extractions: Cerebral Ahromatopsia An acquired form of total colorblindness that can result from trauma, illness, or some other cause. Persons who develop cerebral achromatopsia report that they see a monochromatic world, all in shades of gray. They are able to see gray because of having previously experienced color vision, making it possible for them to perceive the absence of color as gray. Technology and science have yet to find a truly effective way to correct this vision deficiency. The histology of the blue cone monochromat eye has yet to be discovered, much less the true functioning of the achromat eye. The condition of complete achromatopsia is more than simply complete color-blindness, but a combination of other symptoms including reduced visual acuity, photophobia, and nystagmus.
Achromatopsia achromatopsia Guide picks. achromatopsia is a rare hereditary vision disorderwhich results in poor visual acuity (can't see well) and colorblindness. http://rarediseases.about.com/cs/achromatopsia/
Achromatopsia achromatopsia. achromatopsia and Color Blindness achromatopsia vision disorderachromatopsia. WHAT IS achromatopsia? - Congenital achromatopsia http://www.health-nexus.com/achromatopsia.htm
Extractions: Health-Nexus.Net Health-Nexus.Org The #1 Health information site Search Health-Nexus for: Match ALL words Match ANY word Email this page to a friend ! Post a question or comment on our Message Board Home Page Health Specialties Health News ... Alternative Health Options Substance Abuse Animal Health Search: Books Magazines Video Keywords: Find it Here Achromatopsia Achromatopsia - A wide range of helpful Achromatopsia information concerning treatment, prevention, diagnosis, email groups, support groups, personal stories and much more. Updated regularly. Achromatopsia Network - An information and support network for individuals and families who are affected by the rare inherited vision disorder achromatopsia. WHAT IS ACHROMATOPSIA?
Health Information Resource Database: Achromatopsia Network Inclusion of an information resource in this database does not imply endorsementby the US Department of Health and Human Services.. achromatopsia Network. http://www.health.gov/nhic/NHICScripts/Entry.cfm?HRCode=HR2568
Database Search Results Database Search Results. Searched keywords for achromatopsia.achromatopsia Network. NHIC Home Page http://www.health.gov/nhic/NHICScripts/Hitlist.cfm?Keyword=Achromatopsia
Ask NOAH About: The Eye Full text information for consumers on common eye health topics, care and treatment English and SpanishCategory Health Medicine Medical Specialties Ophthalmology Disease, Disorder Injury. A, B, C, D, E, G, H, I, J, K, L, M, N, O, P, R,S, T, U, W. achromatopsia achromatopsia The achromatopsia Network What isachromatopsia? http://www.noah-health.org/english/illness/eye/eye.html
Extractions: Research Common Eye Health Topics Glossary - Boston University Glossary of Eye Terminology - Methodist Health Care System, Houston TX (also in Spanish The Eyes (Complete Home Medical Guide/Columbia University Heredity of Eye Color - McGraw Hill How We See Things That Move - Howard Hughes Medical Institute, Chevy Chase, MD ... What Is the Blind Spot? - Serendip
