Nystagmus: To and fro eye movements Greek for head nodding Normal - PowerPoint PPT Presentation

Jan 13, 2024 •258 likes •585 views

Nystagmus: To and fro eye movements Greek for head nodding Normal and abnormal types Classify by wave form and fast phase direction. Wave forms- pendular and jerk Directions (fast phase) - horizontal, vertical and cyclo Pendular and Jerk

Nystagmus: To and fro eye movements Greek for head nodding Normal and abnormal types Classify by wave form and fast phase direction. Wave forms- pendular and jerk Directions (fast phase) - horizontal, vertical and cyclo
Pendular and Jerk Nystagmus
Slow and Fast phase of Jerk Nystagmus Specify direction of nystagmus by fast phase direction- easier to see
Alexander’s Law ull point Fast phase rightward Fast phase leftward Amplitude increases with gaze shift toward direction of fast phase.
Classify nystagmus as you do strabismus: Congenital Developmental Acquired
Normal forms of nystagmus OKN VOR Voluntary- back to back saccades
Voluntary Nystagmus QuickTime™ and a Photo - JPEG decompressor are needed to see this picture
Congenital nystagmus Associated with albinism and reduced VA VA reduced by non-foveal images Adopt head turn to find null-point & minimize with prisms Nystagmus blocking syndrome- large esotropia Follows Alexander’s law- Amplitude increases with gaze shift toward direction of fast phase.
Congenital Nystagmus
Developmental Nystagmus: Latent Nystagmus- part of infantile strabismus syndrome LN, DVD, asymmetric OKN Spasmus Nutans- normally grow out of it.
Latent Nystagmus
Latent Nystagmus- Developmental
Spasmus Nutans
Acquired Nystagmus Sudden onset.
Acquired Nystagmus- pendular and jerk combo
Oscillopsia- acquired nystagmus
Gaze evoked Endpoint Nystagmus
Periodic Alternating Nystagmus (PAN)
Rebound Nystagmus – gaze right evoked with rebound
Rebound Nystagmus – gaze left evoked with rebound
Hyperventilation Nystagmus
Vertical forms of nystagmus: Cerebellar disorders
SeeSaw Nystagmus
SeeSaw Nystagmus
Downbeat Nystagmus
Upbeat Nystagmus
Ocular Bobing
Slow Control

Recommend

Two-dimensional Signal Analysis Reduced from Three-dimensional Nystagmus Eye Movements Martti

Two-dimensional Signal Analysis Reduced from Three-dimensional Nystagmus Eye Movements Martti Juhola1, Heikki Aalto2 and Timo Hirvonen2 1Computer Science, School of Information Sciences, University of Tampere, Tampere, Finland 2Department of

735 views • 19 slides

Three classes of eye movements: Gaze Stabilization with body movement Optokinetic Nystagmus (OKN)

Three classes of eye movements: Gaze Stabilization with body movement Optokinetic Nystagmus (OKN) Vestibulo-ocular reflex (VOR) Foveal gaze shifts with attention shifts Saccades Asymmetric vergence Foveal Maintenance of stationary &

477 views • 20 slides

Investigation of infantile onset Financial Disclosures nystagmus Anthony T Moore NONE

12/2/2016 Investigation of infantile onset Financial Disclosures nystagmus Anthony T Moore NONE Ophthalmology Department UCSF School of Medicine Infantile Nystagmus Infantile nystagmus early onset acquired bilateral visual impairment

402 views • 7 slides

BODY LANGUAGE DEFINITIONS: EMBLEMS: - Movements or expressions used in place of words. Almost

BODY LANGUAGE DEFINITIONS: EMBLEMS: - Movements or expressions used in place of words. Almost always performed deliberately. Over 50 emblems performed in the US today! Examples: Head Nod Yes /~/ Head Shake No /~/ Hitch Hikers Thumb /~/

274 views • 6 slides

Latin and Greek Elements in English Lessons 1 and 2: Overview of Greek Civilization

Latin and Greek Elements in English Lessons 1 and 2: Overview of Greek Civilization Prehistory Indo-European Invasions earliest known inhabitants are the mysterious Pelasgians some ancient Greek words/names may be Pelasgian in

199 views • 16 slides

Latin and Greek Elements in English Lesson 3: Greek Bases in general, its somewhat more

Latin and Greek Elements in English Lesson 3: Greek Bases in general, its somewhat more difficult to learn Greek forms than their Latin counterparts, e.g. de- vs. cata- n.b. the Greek language never influenced early English to the

257 views • 7 slides

Greek Tragedy Greek Tragedy Introduction: The Sixth Century BCE, or the End of the Pre

Greek Tragedy Greek Tragedy Introduction: The Sixth Century BCE, or the End of the Pre Classical Age The Birth and Nature of Tragedy Theatron : Performance Space Actors and Acting in Greek Tragedy Conclusion: Euripides

252 views • 23 slides

Chapter 3:The Early Greek World Greek Geography and Culture The Prehistory of Greece

Chapter 3:The Early Greek World Greek Geography and Culture The Prehistory of Greece The Pre-Classical Age of Greek History Delphi Delphi Delphi Thessaly Delos xxx Map of Greek Dialects The Apotheosis of Homer (Ingres) Walls

877 views • 35 slides

02 GREEK ECONOMY & OUTLOOK Can the New Government Revive the Greek Animal Spirits? 02

02 GREEK ECONOMY & OUTLOOK Can the New Government Revive the Greek Animal Spirits? 02 2.1 ECONOMIC RECOVERY Since 2017, the Greek Economy has been Range-bound Between 1.5%-2.0% 2019e 1.6% Source: ELSTAT, Piraeus Bank Research 2 |

464 views • 12 slides

Envir Environmental onmental Social Movements Social Movements & Pr & Protest

Envir Environmental onmental Social Movements Social Movements & Pr & Protest Rhetoric otest Rhetoric FRAMES Interpre've structures through which individuals organize an ambiguous stream of

428 views • 4 slides

Greek Life at UConn culture and cultures of UConn Greek Life UConn welcomes another

Greek Community Affairs Board town meeting speaks to promising future for NPHC Showcase celebrates Greek Life at UConn culture and cultures of UConn Greek Life UConn welcomes another fraternity and a co-ed Over 200 IFC

342 views • 22 slides

On Signal Analysis of Three-dimensional Nystagmus Martti JUHOLA a , Heikki AALTO b and Timo

On Signal Analysis of Three-dimensional Nystagmus Martti JUHOLA a , Heikki AALTO b and Timo HIRVONEN b a Department of Computer Sciences, 33014 University of Tampere, Finland b Department of Otorhinolaryngology, Helsinki University Central

346 views • 19 slides

2 Corinthians 5 5:17-21 GREEK 2 Cor. 5:17 if anyone is in Christ, he is a new

2 Corinthians 5 5:17-21 GREEK 2 Cor. 5:17 if anyone is in Christ, he is a new creation" 91X 1. what is old has passed away This is aorist tense in the indicative mood referring to a completed act in past time. GREEK 2

198 views • 17 slides

Brother Kills Brother The Greek Civil War 1946-1949 and the American Intervention: a Greek Drama

Brother Kills Brother The Greek Civil War 1946-1949 and the American Intervention: a Greek Drama without Deus ex Machina Dr. Chrysanthi Koutsiviti October 2017 4 th of August 1936 October 1940 April 1941 German Occupation 13,936 Greek

826 views • 64 slides

Association of Greek Valuers The Association of Greek Valuers is a non-profit Association that

Association of Greek Valuers The Association of Greek Valuers is a non-profit Association that started in the end of 2007 and established with the No5336/2009 decision of the One-Member Court of the First. Since 2010, A.VA.G. has been a Full

305 views • 14 slides

Chapter 8: Early Greek Comedy and Satyr Plays How old is Greek Comedy? several humorous

Chapter 8: Early Greek Comedy and Satyr Plays How old is Greek Comedy? several humorous scenes in Homer Dios Apate (The Seduction of Zeus): Iliad (Book 14) Ares and Aphrodite : Odyssey (Book 8) Chapter 8: Early Greek Comedy

423 views • 19 slides

Ancient Greek home life By Bailey and Bruno Greek HomeS Greeks home were generally very small ,

Ancient Greek home life By Bailey and Bruno Greek HomeS Greeks home were generally very small , with a walled garden. They were made of Sun dried Brick mud. If they had more money the house would be grander and they would have slaves. Greek

205 views • 8 slides

Chapter 4.1: Origins of Greek Theatre The Standard View of the Origin of Greek Drama

Chapter 4.1: Origins of Greek Theatre The Standard View of the Origin of Greek Drama Thespis Tragoidia Aristotles Poetics , Chpt. 4.1-6 (1449a) The Theseus Dithyramb by Bacchylides The Few Facts Known about Early

991 views • 29 slides

Corpus of Modern Greek and the Greek Language Question Maxim Kisilier 2011- 2015: RAS program

Corpus of Modern Greek and the Greek Language Question Maxim Kisilier 2011- 2015: RAS program Corpus Linguistics: 14 copora including Albanian and Modern Greek (http://web-corpora.net) Followed the model of the Eastern Armenian

519 views • 24 slides

Aim I can find out about Ancient Greek gods and goddesses and am able to use this knowledge to

Aim I can find out about Ancient Greek gods and goddesses and am able to use this knowledge to plan my own Greek myth Success Criteria I can research different Greek gods and say key facts about them I can plan my own Greek myth, using

552 views • 10 slides

A New Legal and Regulatory Framework for the Greek Gas Market 8 th Greek National Energy

A New Legal and Regulatory Framework for the Greek Gas Market 8 th Greek National Energy Conference: Energy and Development 2003 Carlos Lapuerta The Brattle Group November 27, 2003 15 Berners Street London, W1T 3LJ Tel: +44-20-7907-1180

235 views • 11 slides

Greek Assosiation of HAE Stavroula Labiri HAE Representative for Greece Who we are? Greek

Greece Greek Assosiation of HAE Stavroula Labiri HAE Representative for Greece Who we are? Greek Association of HAE Stavroula Labiri, HAE Representative for Greece We are members of the HAEi and the Greek Alliance for Rare Diseases.

315 views • 14 slides

Crisis regimes and emerging social movements in the cities of Southern Europe. The experience of

Urban crisis or urban crises? Comparing austerity urbanism, everyday life and resistance in Greek and German cities VIDEO Workshop 5 th -7 th December 2013 School of Architecture, National Technical University of Athens, Greece. Crisis

63 views • 4 slides

Understanding how activity in the brain produces movements Raghav Rajan, IISER Pune Nov 29 th

Understanding how activity in the brain produces movements Raghav Rajan, IISER Pune Nov 29 th 2015 1 We all make many different movements every day How do we make these movements? 2 Skeletal muscles in our body help us move our body

716 views • 34 slides