21. Nystagmus EM guidemap nystagmus. Click Diagnostic approach to pathologic nystagmus.What are the symptoms and signs of nystagmus? - nystagmus http://www.homestead.com/emguidemaps/files/nystagmus.html

EM guidemap - Nystagmus Click on any of the headings or subheadings to rapidly navigate to the relevant section of the guidemap Introduction Definitions and general principles Diagnostic approach to pathologic nystagmus binocular conjugate nystagmus ... Eye movement disorders that mimic nystagmus Introduction - this guidemap is a companion guidemap to the ataxia, incoordination and dysequilibrium guidemap and the vertigo guidemap , and this guidemap offers a reader much more detailed information on nystagmus - this guidemap serves two purposes:- gives a reader a clearer understanding of what causes nystagmus, and how nystagmus is classified serves as a "mini-reference bible" of many different types of acquired nystagmus, so that readers can use the hyperlink mechanism to selectively read through individual sections, as needed (* note that this guidemap is very selective in its presentation of information on nystagmus, and that it does not deal with latent nystagmus or congenital nystagmus => this guidemap is primarily focused on providing basic problem-solving information on acquired nystagmus in adult patients and older children) Definitions and general principles What is nystagmus?

22. Forensic-Evidence: Biological Evidence - H.G.N. (Horizontal Gaze Nystagmus) An additional test is the horizontal gaze nystagmus ( HGN ). Alcohol stimulatesthe nerve endings, making nystagmus more pronounced in intoxicated persons. http://www.forensic-evidence.com/site/Biol_Evid/HGN.html

This article is a condensed version of a paper written in partial fulfillment of the requirements for the class of Scientific Evidence and Opinion Testimony during the Winter Semester of 1999 at the UMKC School of Law. The extensive footnotes have been omitted. An additional test is the horizontal gaze nystagmus ("HGN"). When used in combination with divided attention tests, HGN helps police officers correctly distinguish suspects who are under the influence of alcohol from those who are not. The test is based on the fact that alcohol affects the automatic tracking mechanisms of the eyes. Nystagmus is defined as "an involuntary rapid movement of the eyeball, which may be horizontal, vertical, rotatory, or mixed." Alcohol slows down the eyes' ability to rapidly track objects and causes to eyes to oscillate, or "jerk", before they normally would in a sober person. Alcohol stimulates the nerve endings, making nystagmus more pronounced in intoxicated persons. As a person's blood alcohol concentration increases, the eyes will "jerk" sooner as they move to the side. The HGN test claims to gauge intoxication by measuring the involuntary oscillation of the eyes. Nystagmus may be caused by many other factors. The court, in

23. Ziekenhuis.nl - Ziektebeelden - Nystagmus nystagmus. De Nederlandse term voor nystagmus is wiebel of trilogen.Met gehaald. In de slaap en onder narcose verdwijnt de nystagmus. http://www.ziekenhuis.nl/index.php?cat=ziektebeelden&item_id=300&ziektebeelden=z

24. Understanding Nystagmus Understanding nystagmus. Summary Designed to help you Understanding nystagmus.What is nystagmus? nystagmus is an uncontrolled movement http://www.rnib.org.uk/xpedio/groups/public/documents/PublicWebsite/public_rnib0

shopping donations what's new link to us sitemap ... Low Vision Back to: Homepage Eye info Search: Whole site Eye info section Eye info contents Contact us FAQs Useful links Help and information ... Research Library Eye info Print Email Understanding nystagmus Summary : Designed to help you understand more about your eye condition, this guide has been written by our experienced eye health team. What is nystagmus? Who is affected? What causes nystagmus? How common is the condition? ... Who can I contact for further information? Understanding nystagmus What is nystagmus? Nystagmus is an uncontrolled movement of the eyes, usually from side to side, but sometimes the eyes swing up and down or even in a circular movement. Most people with nystagmus have vision which is worse than average. Back to top Who is affected? Nystagmus that appears in the first months of life is called "early onset nystagmus" or "congenital nystagmus". The condition may also develop later in life when the term "acquired nystagmus" is used. Back to top What causes nystagmus?

25. Aniridia Network International - About Aniridia - Nystagmus nystagmus is the involuntary, rhythmical,oscillations of one or both eyes, in any or all fields of gaze....... nystagmus. http://www.aniridia.org/conditions/nystagmus.html

Supporting people with aniridia and their Families Just Diagnosed? click here Homepage About Us About Aniridia ... The Aniridia Directory Contact Details Aniridia Network PO Box 6444 Colchester UK Tel: (+44) 07779 859 624 hannah@aniridia.org Nystagmus Description Nystagmus is the involuntary, rhythmical, oscillations of one or both eyes, in any or all fields of gaze. Pendular: undulating movements of equal speed, amplitude, and duration, in each direction or Jerky: with slower movements in one direction, followed by a faster return to the original position. Horizontal:from ulternating between, left and right Vertical: ulternating between up and down Oblique: moving in a diagonal plain or any combination of these: Generally, the faster the rate, the smaller the amplitude (and vice versa). The defect is classified according to the position of the eyes when it occurs. 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;

26. EMedicine - Nystagmus, Congenital : Article By David T Wheeler, MD nystagmus, Congenital Congenital or infantile nystagmus is a clinicalsign that may take many different forms. Involuntary, rhythmic http://www.emedicine.com/oph/topic688.htm

(advertisement) Home Specialties Resource Centers CME ... Patient Education Articles Images CME Patient Education Advanced Search Consumer Health Link to this site Back to: eMedicine Specialties Ophthalmology Extraocular Muscles Nystagmus, Congenital Last Updated: July 9, 2001 Rate this Article Email to a Colleague Synonyms and related keywords: infantile nystagmus AUTHOR INFORMATION Section 1 of 10 Author Information Introduction Clinical Differentials ... Bibliography Author: David T Wheeler, MD , Assistant Professor, Department of Ophthalmology, Oregon Health Sciences University David T Wheeler, MD, is a member of the following medical societies: American Academy of Ophthalmology American Association for Pediatric Ophthalmology and Strabismus , and Phi Beta Kappa Editor(s): Michael J Bartiss, OD, MD , Medical Director, Ophthalmology, Family Eye Care of the Carolinas; Donald S Fong, MD, MPH , Assistant Clinical Professor of Ophthalmology, UCLA School of Medicine; Consulting Physician, Department of Ophthalmology, Southern California Permamente Medical Group; J James Rowsey, MD

27. EMedicine - Nystagmus, Acquired : Article By Christopher M Bardorf, MD, MS nystagmus, Acquired nystagmus may be defined as a periodic rhythmicocular oscillation of the eyes. The oscillations may be sinusoidal http://www.emedicine.com/oph/topic339.htm

(advertisement) Home Specialties Resource Centers CME ... Patient Education Articles Images CME Patient Education Advanced Search Consumer Health Link to this site Back to: eMedicine Specialties Ophthalmology Extraocular Muscles Nystagmus, Acquired Last Updated: August 8, 2001 Rate this Article Email to a Colleague AUTHOR INFORMATION Section 1 of 10 Author Information Introduction Clinical Differentials ... Bibliography Author: Christopher M Bardorf, MD, MS , Ophthalmology, Children's Eye Physicians, Denver, CO Coauthor(s): Gregory Van Stavern, MD , Assistant Professor, Departments of Ophthalmology and Neurology, Kresge Eye Institute, Wayne State University; Enrique Garcia-Valenzuela, MD, PhD , Assistant Professor of Vitreoretinal Surgery, Department of Ophthalmology, Emory University Christopher M Bardorf, MD, MS, is a member of the following medical societies: American Medical Association , and Association for Research in Vision and Ophthalmology Editor(s): Michael J Bartiss, OD, MD

28. Nystagmus - Multiple Sclerosis Encyclopaedia nystagmus. nystagmus is rapid, involuntary movements of the eyes whichis often unnoticeable to people with the complaint. To others http://www.mult-sclerosis.org/nystagmus.html

nystagmus Nystagmus is rapid, involuntary movements of the eyes which is often unnoticeable to people with the complaint. To others it resembles the eye movements when someone is looking at the scenery from the window of a moving train. Usually it occurs in the horizontal plane but it can also affect the vertical. Nystagmus can be caused by a variety of underlying conditions, including multiple sclerosis of which it is quite a common symptom. Most presentations of a type of nystagmus called Acquired Pendular Nystagmus are associated with multiple sclerosis. In MS, nystagmus is often associated with internuclear ophthalmoplegia - which is a loss of coordination between the two eyes caused by a lesion in an area of the brain called the medial longitudinal fasciculus (MLF) . Nystagmus can also be caused by lesions in the cerebellum , the area of the brainstem where the vestibular cranial nerve arises or further along the vestibular pathways. Apart from immunomodulating drugs and steroids, there are no treatments for nystagmus. If it is a troubling condition it may be a good idea to experiment with different lighting levels. As with most symptoms of MS, fatigue and heat ( Uhthoff's symptom ) usually make the condition worse.

29. Nystagmus nystagmus. There are 47 named types of nystagmus. Also the amplitude of thebeat will often be augmented by covering one eye (latent nystagmus). http://www.theberries.ns.ca/BOTW_archives/nystagmus.html

Nystagmus There are 47 named types of nystagmus . This can be a very challenging and difficult area of eye movement disorder to deal with clinically. However there are essentially only two divisions of nystagmus to worry about : pathological and non-pathological. The control and coordination of ocular movements depends on good connections between the eyes, the visual conducting system, the occipital cortex, the visual memory areas, the frontal lobe, the cerebellum, brainstem and finally the cranial nerves. It represents the biggest single functional unit in the Central Nervous System. Virtually anything which disorganises the inputs in the cerebellar, vestibular of or brain stem regions will result in nystagmus. Fortunately the most common form of nystagmus, congenital nystagmus , is non-pathological It is often familial and there will always be a past history of it. Also the amplitude of the beat will often be augmented by covering one eye (latent nystagmus). Most importantly, this nystagmus will always beat horizontally in up or down gaze. It is benign and often associated with congenital difficulties with sight. There is also no oscillopsia or sensation movement of the environment with it.

30. Nystagmus - Visionary Music main about music linx feedback contact Allcontent (c) nystagmus 2o04 Website by doktor J. http://nystagmus.benow.ca/

main about music linx ... contact All content (c) Nystagmus 2o04 Website by doktor J

31. Nystagmus nystagmus. Beeld nystagmus is een ritmisch herhaald onwillekeurig bewegenvan de ogen. Dit gebeurt onafhankelijk van de willekeurige http://www.optiek-depauw.be/Oogziekten/nystagmus.htm

NYSTAGMUS Beeld: Nystagmus is een ritmisch herhaald onwillekeurig bewegen van de ogen. Dit gebeurt onafhankelijk van de willekeurige oogbewegingen en kan niet bewust worden onderdrukt, de bewegingen zijn niet aan de wil onderworpen. Dit is gewoonlijk met het blote oog waar te nemen door een ander. Nystagmus kan vóórkomen als gevolg van en naast een andere oogaandoening, of als op zichzelf staande oogaandoening. Er zijn verschillende vormen van nystagmus: de "schommelnystagmus" (pendelnystagmus), waarbij de afzonderlijke fasen van de beweging even snel plaatsvinden. de "ruknystagmus", waarbij de beweging uiteenvalt in een langzame fase, gevolgd door een snelle beweging in tegengestelde richting. mengvormen van a. en b., waarbij bijvoorbeeld in één blikrichting een schommelnystagmus bestaat en in een ander blikrichting een ruknystagmus. Een andere indeling kan gemaakt worden aan de hand van de aard van de oorzaak: bij oogaandoeningen (oculaire nystagmus); bij aandoeningen van het centraal zenuwstelsel (centrale nystagmus);

32. Nystagmus nystagmus, Normal Findings Lateral gaze nystagmus Associated with stretchreceptor; All patients have a few beats of end point nystagmus. http://www.fpnotebook.com/NEU85.htm

Home About Links Index ... Editor's Choice document.write(code); Advertisement Neurology Examination Cranial Nerve ... Oculocephalic Reflex Nystagmus Headache Headache Red Flag Infectious Disease Meningeal Irritation ... Two Point Discrimination Assorted Pages Neurologic Exam Oculovestibular Testing NIH Stroke Scale Los Angeles Prehospital Stroke Screen ... Dysarthria Nystagmus Book Home Page Cardiovascular Medicine Dentistry Dermatology Emergency Medicine Endocrinology Gastroenterology General Medicine Geriatric Medicine Gynecology Hematology and Oncology HIV Infectious Disease Jokes Laboratory Neonatology Nephrology Neurology Obstetrics Ophthalmology Orthopedics Otolaryngology Pediatrics Pharmacology Prevention Psychiatry Pulmonology Radiology Rheumatology Sports Medicine Surgery Urology Chapter Neurology Index Autonomic Cerebellum Chorea Cranial Nerve Cognitive CSF Cardiovascular Medicine Demyelinating Dermatology Disability Examination Ophthalmology Geriatric Medicine Gynecology Headache Infectious Disease Laboratory General Level of Consciousness Motor Obstetrics Pediatrics Pharmacology Procedure Psychiatry Radiology Seizure Sensory Sports Medicine Surgery Tremor Page Examination Index Approach CN CN 1 CN 2 CN 3 CN 4 CN 5 CN 6 CN 7 CN 8 CN 9 CN 10 CN 11 CN 12 Cognitive Aphasia Cognitive Apraxia Cognitive Executive Function Cognitive Higher Cognitive Memory Cognitive Mental Status Cognitive Mental Status ACE Cognitive Mental Status Mini Cognitive Mental Status Screening Cognitive NPIQ Cognitive Test CAM Cold Calorics CV CVA Assess Hospital NIH Score

33. Nystagmus nystagmus. Inleiding De Nederlandse term voor nystagmus is wiebelof trilogen. In de slaap en onder narcose verdwijnt de nystagmus. http://www.oogheelkunde.org/voorlichting/nystagmus.html

Nystagmus Inleiding 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. De exacte oorzaak van nystagmus is niet bekend maar moet gezocht worden in het oogbesturingssysteem binnen de hersenen. Dit is een zeer complex samenwerkingsproces binnen de hersenen dat mede aangestuurd wordt door binnenkomende informatie afkomstig uit de diverse zintuigen (evenwicht, houding, visuele informatie). Wanneer er een aangeboren afwijking bestaat in het oogbesturingssysteem spreekt men van een congenitale nystagmus. Ook aangeboren afwijkingen in de bouw of functie van een of beide oogbollen leidend tot een gestoord gezichtsvermogen kunnen een aangeboren of zeer vroeg (binnen 6 weken na de geboorte) ontstane nystagmus teweeg brengen. Enkele voorbeelden hiervan zijn aangeboren staar(lenstroebeling), afwijkingen in de aanleg van het netvlies of de oogzenuw en albinisme. Tenslotte kan nystagmus optreden in het kader van een ander, veelal neurologisch ziekte -beeld bijvoorbeeld na een hersenbloeding of een ernstig hersenletsel.

34. Eye Conditions > Nystagmus -- EyeMDLink.com nystagmus. nystagmus is the condition characterized by repetitive oscillationsof the eyes. The cause of congenital nystagmus is frequently unknown. http://www.eyemdlink.com/Condition.asp?ConditionID=303

35. Eye Conditions > Congenital Nystagmus -- EyeMDLink.com Last Updated 12/21/2001. Congenital nystagmus. nystagmus is characterizedby repetitive, involuntary oscillations of the eyes. When http://www.eyemdlink.com/Condition.asp?ConditionID=489

36. California Drunk Driving Law Center - Books - Drunk Driving Defense - Excerpts - 7.4.1 Field Evidence CrossExamination on Horizontal Gaze nystagmus. A. Ofcourse not. Q. To determine physiological causes of nystagmus? A. No. http://www.duicenter.com/books/dd_book/field.html

Site Map California DUI / DWI Information Drunk Driving Defense, 5th Edition (2000) By Lawrence Taylor Back to Book Info 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.

37. USAeyes.org - Nystagmus nystagmus. nystagmus is the rapid and jerky involuntary movement of theeye. Refractive surgery is sometimes impossible for individuals http://www.usaeyes.org/faq/subjects/nystagmus.htm

You are visitor Navigation... HOME SEARCH Services... LOCATE A CRSQA CERTIFIED LASIK SURGEON ASK THE LASIK EXPERTS LASIK COMPLICATIONS? HELP IS AT HAND Need to know... 50 TOUGH QUESTIONS FOR YOUR LASIK DOCTOR WHAT CRSQA CERTIFICATION MEANS Community... LASIK BULLETIN BOARD LASIK GUEST BOOK Research... KNOW WHAT YOU DON'T KNOW ABOUT LASIK SHOULD YOU DO LASIK? BAD RESULTS ... REPORT A BAD LASIK DOCTOR Doctors... BECOME CERTIFIED About us... LEARN ABOUT US CRASS COMMERCIALISM Contact us... CONTACT US Nystagmus 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 have the ability to follow these movements. An evaluation by a competent refractive surgeon can determine if you are a possible candidate. HOME SEARCH LOCATE A LASIK SURGEON 50 TOUGH QUESTIONS FOR YOUR LASIK DOCTOR ... CONTACT US Materials produced here are for INFORMATIONAL PURPOSES ONLY AND ARE NOT INTENDED TO PROVIDE MEDICAL ADVICE. See full Council for Refractive Surgery Quality Assurance, CRSQA, CRSQA Certified Co-Management Specialist

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

39. Eye Problems In Cats Mike Richards, DVM 2/10/2000. Quivering eyes nystagmus. Q Dear Dr.Richards I am a subscriber and have a question about Shadow s eyes. 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

40. Nystagmus nystagmus, Options. What is nystagmus? nystagmus is an involuntarymovement of the eyes usually from side to side, but sometimes http://www.eyecare-information-service.org.uk/pages/information/disorders/nystag

nystagmus Options 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. Many people can register as partially sighted and a small number can register as blind. Who is affected? Nystagmus that 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. Several types of nystagmus can be inherited. To find out the chances of someone passing on nystagmus to the next generation, a specialist must first make an accurate diagnosis of the underlying condition. It may then be necessary to consult a clinical geneticist for detailed information and counselling.

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