41. Nystagmus: What Is Nystagmus? nystagmus is generally described as an involuntary movement of the eyes, nystagmus is neither contagious or infectious, but it is thought to sometimes http://homepage.ntlworld.com/shaun_d_smith/nyst/whatisit.html

*What is Nystagmus?* Congenital Nystagmus Causes of Nystagmus Effects of Nystagmus and Social Implications ... HOME What is Nystagmus? Nystagmus is generally described as an involuntary movement of the eyes, which reduces vision. The movement is usually side to side (but can be up and down or circular motion) and can be either jerk or pendular. (See this site for animations that shows the difference www.geocities.com/HotSprings/Spa/3699/Appear.html ). Nystagmus is neither contagious or infectious, but it is thought to sometimes be hereditary. Normal (physiological) nystagmus occurs for example when a passenger of a train watches as telegraph poles pass the window. His/her eyes will travel one way, and then jerk in the opposite direction to begin watching the next pole. There are over 40 different types of nystagmus ( www.theberries.ns.ca/BOTW_archives/nystagmus ) but the main division is between Congenital and Acquired Nystagmus. Congenital nystagmus is thought to be present at birth, but is usually not apparent until the baby is a few months old. Acquired nystagmus occurs later than 6 months of age, and can be caused by a stroke, disease such as multiple sclerosis, or even a heavy blow to the head.

42. Nystagmus: Congenital Nystagmus It is not clear whether congenital nystagmus is actually present at birth, A type of congenital nystagmus is latent nystagmus, and is only present when http://homepage.ntlworld.com/shaun_d_smith/nyst/congentl.html

What is Nystagmus? *Congenital Nystagmus* Causes of Nystagmus Effects of Nystagmus and Social Implications ... HOME Congenital Nystagmus It is not clear whether congenital nystagmus is actually present at birth, or whether it occurs early in the child's vision development. It is therefore also referred to as early-onset or infantile nystagmus. Many children with nystagmus have no other vision or brain problems. This is known as idiopathic, which means of unknown cause. However, nystagmus is often a symptom of other conditions such as albinism, aniridia, cataracts, cone dysfunction and many others. Nystagmus can be present with cerebral palsy, Down's Syndrome and many motor system diseases. A type of congenital nystagmus is latent nystagmus, and is only present when one eye is covered. This is not usually noticed until the first visit to the optician. It is not known how many people suffer from nystagmus, but it is thought to be 1 in 1000 adults, and 1 in 640 children, according to the Nystagmus Network. Despite all the associated problems, many nystagmus sufferers are able to lead normal, independent lives.

43. Nystagmus http://www.imgsrv.com/glossary/nystagmus.html

44. Understanding Nystagmus By Drs. Richard & Laura Windsor - Vision World Wide, Inc Traditionally nystagmus has been divided into two groups. Sensory nystagmus is related to vision loss and motor nystagmus is related to the control of http://www.visionww.org/drswindsor-nystagmus.htm

Click Here to access our office online Understanding Nystagmus by Richard L. Windsor, O.D. Laura K. Windsor, O.D. The Low Vision Centers of Indiana Nystagmus is an involuntary rhythmic shaking or wobbling of the eyes. The term nystagmus is derived from the Greek word, "nmstagmos", which was used to describe the wobbly head movements of a sleepy or inebriated individual. Nystagmus has also been described as "dancing eyes" or "jerking eyes". Doctors and researchers classify nystagmus by the characteristics of the eye movements like do they move back and forth like a pendulum or do they move slowly in one direction and then rapidly in another? Do the eyes move laterally or vertically and by how much? How fast do the eyes move? There are various methods of classifying nystagmus. Traditionally nystagmus has been divided into two groups. Sensory nystagmus is related to vision loss and motor nystagmus is related to the control of muscle function. There are over 45 types of nystagmus. To simplify our explanation of nystagmus, we will divide nystagmus into two basic types. The first is nystagmus that begins very early in life and is associated with vision loss. The second is called acquired nystagmus and is associated with neurological disorders occurring later in life. Nystagmus from Early in Life Early onset nystagmus often accompanies vision loss acquired at birth or soon after and may be one of the first signs that a child has a loss of vision. Studies suggest 1 in every 1000 children have nystagmus. In 80-90% of cases, it is a side effect of vision loss from eye diseases such as albinism, aniridia, optic nerve hypoplasia, achromatopsia congenital cataracts, coloboma or retinopathy of prematurity. This type of nystagmus is usually observed around the sixth to eighth week of life and is rarely seen before then. In about 10-20% of cases, it presents with mild vision loss not associated with other diagnosed ocular diseases. The discovery of nystagmus in a child is reason for an immediate examination!

45. Nystagmus nystagmus Mnemonic. VOCAL © Psychejam 2001. The Possible causes of nystagmus are as follows. V = Vestibular due to vestibular pathology http://www.psychejam.com/nystagmus.htm

46. Audiology Online: Rotary Nystagmus In Posterior Canal Bppv Ask our experts to answer your questions on hearing aids, tinnitus, cochlear implants and all other hearing healthcare topics. http://www.audiologyonline.com/askexpert/display_question.asp?id=158

47. Audiology Online: Spontaneous Nystagmus Ask our experts to answer your questions on hearing aids, tinnitus, cochlear implants and all other hearing healthcare topics. http://www.audiologyonline.com/askexpert/display_question.asp?id=138

48. Nystagmus De Nederlandse term voor nystagmus is wiebel of trilogen. Met de term nystagmus worden onwillekeurige ritmische bewegingen van de oogbollen aangeduid. http://www.oogheelkunde.org/voorlichting/nystagmus.html

Nystagmus Inleiding De Nederlandse term voor nystagmus is wiebel- of trilogen. Met de term nystagmus worden onwillekeurige ritmische bewegingen van de oogbollen aangeduid. Onwillekeurig betekent dat de bewegingen buiten de wil om ontstaan en ook niet direct door de patiënt kunnen worden beïnvloed Ritmisch wil zeggen dat de bewegingen een bepaald patroon vertonen met een vrij vaste snelheid en richting. Naar zijn vorm is nystagmus te verdelen in een “pendelnystagmus” waarbij de ogen heen en weer slingeren als de slinger van een klok, en een “ruknystagmus”” of “zaagtandnystagmus”waarbij de snelheid van bewegen in de ene richting verschilt van die in de andere richting: de ogen drijven als het ware langzaam af en worden met een snelle rukbeweging weer terug gehaald. In de slaap en onder narcose verdwijnt de nystagmus. Oorzaken Nystagmus is een betrekkelijk zeldzame afwijking in de besturing van de oogbollen. Er bestaat een bij gezonde mensen voorkomende vorm van nystagmus: de zogenaamde “treinnystagmus” die bij mensen opwekbaar is door het waarnemen van voor de ogen langslopende zich herhalende beelden. Bepaalde geneesmiddelen ( o.a. barbituraten, luminal en sommige geneesmiddelen tegen epilepsie) en alcohol kunnen een blikrichtingafhankelijke nystagmus oproepen. Ook via stimulering van het evenwichtsorgaan kan nystagmus optreden onder meer door draaiing van het hoofd of het hele lichaam of door warmte of koude stimulatie van het binnenoor. Deze vorm van nystagmus wordt “vestibulaire”nystagmus genoemd.

49. USAEyes.org - Nystagmus And LASIK, IntraLASIK, PRK, LASEK, Epi-LASIK, CK, P-IOL, Nonprofit LASIK patient advocacy network of evaluated LASIK doctors and detailed LASIK laser eye surgery information. http://www.usaeyes.org/faq/subjects/nystagmus.htm

Nystagmus and LASIK, IntraLASIK, PRK, LASEK, Epi-LASIK, CK, P-IOL, RLE, etc. Nystagmus is the rapid and jerky involuntary movement of the eye. Refractive surgery is sometimes impossible for individuals with nystagmus, but not always. Newer excimer lasers used for conventional or custom wavefront LASIK IntraLASIK PRK ... LASEK , and Epi-LASIK have the ability to follow these movements. CK does not use tracking, however the surgeon may be able to fixate the eye during treatment for successful CK. Lens based surgery techniques P-IOL and RLE do not require tracking as the eye is anesthetized and fixated during surgery. An evaluation by a competent refractive surgeon can determine if you are a possible candidate for any type of refractive surgery. Consider and Choose With Confidence Last updated Tuesday, August 16, 2005 Materials produced here are for informational purposes only and are not intended to provide medical advice. See full Navigation Website Visits

50. Eye Problems In Cats Quivering eyes nystagmus Corneal ulcers Color vision in cats Blind cats members of the oriental breeds have a congenital problem with nystagmus, http://www.vetinfo.com/cateye.html

Sitemap Vetinfo Catinfo Catindex ... Secure e-mail subscription form Please note: The information on our site is for everyone to read. Please use it as often as you like. Please use the search engine or one of the indexes to see if the information you need is already online. Subscriber Info The income from the subscriptions helps defray the cost of maintaining the site and allows us to keep the large amount of information on www.vetinfo.com free to our readers. Eye Problems in Cats Herpes eye infection in stray kitten Problem with remaining eye after one is removed Sudden blindness Melanosis or Melanoma in eye ... Chronic eye problem also see Horner's Syndrome also see Infectious Disease also see Herpes virus infection Herpes eye infection in stray kitten Question: My husband found a tiny kitten in the street and like an animal lover brought it home. We of course ended up in the animal ER. One eye was completely matted shut, he was covered in fleas and ticks and was infested with parasites and hook worms. Well, everything has improved except the eye. My vet felt it probably started with an untreated respiratory infection. The

51. The MSDS HyperGlossary: Nystagmus Entry in the Material Safety Data Sheet HyperGlossary at ILPI. http://www.ilpi.com/msds/ref/nystagmus.html

Safety Emporium for all your lab and safety needs NTP Glossary Index Oliguria MSDS Topics Free Sites FAQ's Regulations Glossary Software Suppliers Books Forum ... Store Understand your MSDS with the MS-Demystifier Search ALL our MSDS info Nystagmus Definition Nystagmus is a rapid, involuntary, motion of the eyeball (side to side, up and down, rotating and/or oscillating). Nystagmus can be caused by tumors or drugs (such as barbiturates). It can also be a congenital condition (present at birth). MSDS Relevance Exposure to certain chemicals can cause nystagmus. This condition is very easy for other persons to observe. Be certain you read the MSDS's for all chemicals that you are working with and note whether exposure to any of these can cause this condition. As always, take proper precautions to limit your exposure to such materials. Get your eye washes, safety showers, signs and more at Safety Emporium Further Reading More info at the Special Education Exchange. American Nystagmus Network Overview and links at the Low Vision Gateway. See also sclera Entry last updated: Tuesday, March 15, 2005. This page is

52. DUI Blog : Bad Drunk Driving Laws, False Evidence And A Fading Constitution nystagmus The Eye Test . You may have heard of the eye test in DUI This is the nystagmus field sobriety test or, more accurately (there are 47 http://www.duiblog.com/2005/06/11

DUI Blog Bad Drunk Driving Laws, False Evidence and a Fading Constitution "It is the responsibility of the patriot to protect his country from its government." Thomas Paine Nystagmus: "The Eye Test" You may have heard of the "eye test" in DUI investigations. This is the nystagmus field sobriety test or, more accurately (there are 47 different kinds of nystagmus), the horizontal gaze nystagmus test. It is one of the most commonly used field sobriety tests, as it is one of three which make up the federally-approved "standardized battery" of tests, or SFSTs. The test is essentially a measurement of the movement of the eye. Simply stated, "nystagmus" refers to a distinctive involuntary jerking of the eyes; horizontal gaze nystagmus is a pendular (back and forth) movement. This type of nystagmus is commonly measured by the officer in three three different ways, each time using an object such as a pencil, penlight or finger placed a foot or so in front of the suspect's nose and moving it slowly to the left and then to the right. The first part of the test is to determine the angle of onset of nystagmus that is, the angle at which the moving eye begins the jerking motion. The suspect looks straight ahead and, without moving his head, moves his eyes slowly to the right or left. The officer is supposedly able to detect when the nystagmus begins and is supposedly able to estimate the angle from straight ahead at the point where it begins. If the onset is prior to 45 degrees, in theory, the blood alcohol level will be over .05%.

53. DUI Blog : Bad Drunk Driving Laws, False Evidence And A Fading Constitution understand the nystagmus test, administer it correctly, or score it objectively. Further problems with using the nystagmus test in DUI investigations http://www.duiblog.com/2005/06/13

DUI Blog Bad Drunk Driving Laws, False Evidence and a Fading Constitution "It is the responsibility of the patriot to protect his country from its government." Thomas Paine Nystagmus: "The Eye Test" (part 2) I mentioned in the previous post that few officers understand the nystagmus test, administer it correctly, or score it objectively. Further problems with using the nystagmus test in DUI investigations have been summarized by a noted expert in the area, Dr. L. F. Dell'Osso, Professor of Neurology at Case Western Reserve University School of Medicine and Director of the Ocular Motor Neurophysiology Laboratory at the Veteran's Administration Medical Center in Cleveland: Using nystagmus as an indicator of alcohol intoxication is an unfortunate choice, since many normal individuals have physiologic end-point nystagmus...Without a neuro-opthalmologist or someone knowledgeable about sophisticated methods of eye movement recordings, it is difficult to determine whether the nystagmus is pathologic. It is unreasonable that such difficult judgments have been placed in the hands of minimally trained officers. Dell'Osso, "Nystagmus, Saccadic Intrusions, Oscillations and Oscillopsia", 147 Current Neuro-Opthalmology See also an interesting article by Umeda and Sakata entitled "Alcohol and the Oculomotor System", 87

54. Nystagmus nystagmus. Definition. Rhythmic, oscillating motions of the eyes are called nystagmus. A certain type of acquired nystagmus, called spasmus nutans, http://www.healthatoz.com/healthatoz/Atoz/ency/nystagmus.jsp

55. Page Not Found - Strabismus Latent nystagmus appears only when one eye is covered, then both eyes develop Latent nystagmus is a real bother during a standard visual acuity test http://www.strabismus.nl/en/nys_basics.html

@import "misc/drupal.css"; @import "themes/marvinclassic/style.css"; Sponsor Sponsored by QCG Menu What is strabismus? AskTheDoctor Books Mechanics of squint surgery ... About this site Links Hearing, vision, communication and older people Strabismus abstracts Visual Function Questionnaire-25/NL Page not found

56. Nystagmus - Definition Of Nystagmus By The Free Online Dictionary, Thesaurus And Definition of nystagmus in the Online Dictionary. Meaning of nystagmus. What does nystagmus mean? nystagmus synonyms, nystagmus antonyms. http://www.thefreedictionary.com/nystagmus

Domain='thefreedictionary.com' word='nystagmus' Your help is needed: American Red Cross The Salvation Army join mailing list webmaster tools Word (phrase): Word Starts with Ends with Definition subscription: Dictionary/ thesaurus Computing dictionary Medical dictionary Legal dictionary Financial dictionary Acronyms Columbia encyclopedia Wikipedia encyclopedia Hutchinson encyclopedia nystagmus Also found in: Medical Wikipedia Hutchinson 0.02 sec. Page tools Printer friendly Cite / link Email Feedback nys·tag·mus (n -st g m s) n. A rapid, involuntary, oscillatory motion of the eyeball. [New Latin, from Greek nustagmos drowsiness nys·tag mic (-m k) adj. Thesaurus Legend: Synonyms Related Words Antonyms Noun nystagmus - involuntary movements of the eyeballs; the presence or absence of nystagmus is used to diagnose a variety of neurological and visual disorders movement motility motion move - a change of position that does not entail a change of location; "the reflex motion of his eyebrows revealed his surprise"; "movement is a sign of life"; "an impatient move of his hand"; "gastrointestinal motility" physiological nystagmus - small involuntary tremors of the eyeballs; when physiological nystagmus is eliminated by stabilizing the image on the retina the perception fades rapidly from fatigue of the retinal receptors

57. Eye Conditions Nystagmus View Our Complete Eye Care Resource for information about nystagmus. http://www.lensseeker.com/eyecare/c_nystagmus.html

Home Contact Lenses Eye Conditions Coupons ... Nystagmus Nystagmus Eye Conditions Resources For Nystagmus Nystagmus: Further Information Glossary of external links The "Nystagmus Network provides support for those with nystagmus, and the parents and teachers of children with nystagmus". www.rnib.org.uk/info/nystagm.html - Accessed April 2001 This site is quoted on many other nystagmus pages, in particular the Nystagmus Network, who in turn lists the RNIB as a source of information. www.wfubmc.edu/neurology/lectures/nystagmus/nys.html - Accessed April 2001 This is a comprehensive site with an in depth explanation of many of the different types of ... Nystagmus: What is Nystagmus? Normal (physiological) nystagmus occurs for example when a passenger of a train watches as telegraph poles pass the window. There are over 40 different types of nystagmus (www.theberries.ns.ca/BOTW_archives/nystagmus) but the main division is between Congenital and Acquired Nystagmus. The number of people with congenital nystagmus that suffer from this is much less than those with acquired nystagmus. Web Sites - General Visual Impairments Nystagmus Grade I occurs only when the eyes are directed toward the fast component; grade II occurs when the eyes are also in their primary position; grade III occurs even when the eyes are directed toward the slow component. Head-tilting may decrease the nystagmus and is usually involuntary (toward the fast component in jerky nystagmus, or in such a position to minimize pendular nystagmus). Congenital nystagmus of the pendular type usually accompanies congenital visual impairment (e.g., corneal ...

58. Nystagmus - Eye Conditions - Neville Clarence Technologies Suppliers of an extensive range of adaptive technology products. Our services include product engineering, installation and maintenance, training, http://www.nctec.co.za/eye_conditions/nystagmus.html

Eye Condition Fact Sheets What is Nystagmus? Nystagmus is an involuntary movement of the eyes - usually from side to side, but sometimes the eyes oscillate up and down or even in a circular motion. Most people with Nystagmus have vision which is much worse than average - well below what is considered to be short sighted. Most sufferers can be classified as partially sighted and a small number are deemed blind. Who is affected? Nystagmus which appears in the first six months of life is called 'early onset Nystagmus', or 'congenital' or 'infantile Nystagmus'. The condition may also develop later in life when the term 'acquired Nystagmus' is used. What causes Nystagmus? Nystagmus in early childhood may be caused by a defect in the eye or the visual pathway from the eye to the brain. It occurs in a wide range of eye disorders of childhood such as cataract, glaucoma, some disorders of the retina and albinism. It may also be found in children who have multiple disabilities such as Down's Syndrome. Many children with Nystagmus have no eye, brain or other health problems. In this case the condition is called 'congenital idiopathic Nystagmus', or 'idiopathic infantile Nystagmus', meaning that the condition is observed, or starts, early in life and the cause is unknown.

59. California Drunk Driving Law Center - Books - Drunk Driving Defense - Excerpts - 7.4.1 Field Evidence CrossExamination on Horizontal Gaze nystagmus Q. Then, the only training you received on nystagmus was from another police http://www.duicenter.com/books/dd_field.html

Site Map California DUI Laws and Legal Information Drunk Driving Defense, 5th Edition (2000) By Lawrence Taylor Select one or more of these excerpts to obtain an idea of the comprehensive nature of this book Excerpts Preface Nonspecific Analysis Field Evidence The Magic Memory The Fallacy of the "Average Person" 7.4.1 Field Evidence: Cross-Examination on Horizontal Gaze Nystagmus Q. Tell me, sergeant, are you licensed anywhere in this country to diagnose eye disfunction? A. Of course not. Q. To determine physiological causes of nystagmus? A. No. Q. Well; how many times have you qualified as an expert in court on the physiology of the eye? A. On the physiology of the eye, I have not. Q. How many times on the physiological effects of alcohol on eye musculature? A. Never. Q. Sergeant, did you receive training in nystagmus at the highway patrol academy? A. I did. Q. How many hours? A. As I recall, it was six hours of demonstration and instruction. Q. How many hours do all recruits or officers get? A. Six hours.

60. NYSTAGMUS : Contact A Family - For Families With Disabled Children: Information Contact a Family is a UK charity for families with disabled children. We offer information on specific conditions and rare disorders. http://www.cafamily.org.uk/Direct/n36.html

printer friendly NYSTAGMUS home how we can help medical information index of conditions ... how you can help Did you find this page helpful? yes no Nystagmus is a term used for jerky movements of the eyes. Congenital nystagmus occurs at birth or in the first few months of life. It is usually associated with an underlying visual disorder, such as albinism in which there is poor pigmentation of the eyes, skin and hair. Congenital nystagmus may occur, however, in association with a wide range of infantile visual disorders. Accurate diagnosis for nystagmus is necessary to ensure the child has adequate help to deal with the disorder. Occasionally no visual disorder can be detected and the nystagmus is called congenital idiopathic nystagmus or congenital motor nystagmus Recent research shows that nystagmus occurs in approximately 1 in 2,000 births. Some of these children will, however, have multiple disabilities. Inheritance patterns These depend upon the underlying visual disorder. Congenital idiopathic nystagmus may also be inherited. Genetic counselling may be sought in cases of nystagmus. Prenatal diagnosis None Medical text last updated October 2002 by Professor C Harris, Professor of Neurosciences, Institute of Neurosciences, Plymouth University, Plymouth, UK.

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