- •Foreword
- •Preface
- •Contributors
- •Contents
- •1. Epidemiology of Pediatric Strabismus
- •1.1 Introduction
- •1.2 Forms of Pediatric Strabismus
- •1.2.1 Esodeviations
- •1.2.1.1 Congenital Esotropia
- •1.2.1.2 Accommodative Esotropia
- •1.2.1.3 Acquired Nonaccommodative Esotropia
- •1.2.1.4 Abnormal Central Nervous System Esotropia
- •1.2.1.5 Sensory Esotropia
- •1.2.2 Exodeviations
- •1.2.2.1 Intermittent Exotropia
- •1.2.2.2 Congenital Exotropia
- •1.2.2.4 Abnormal Central Nervous System Exotropia
- •1.2.2.5 Sensory Exotropia
- •1.2.3 Hyperdeviations
- •1.3 Strabismus and Associated Conditions
- •1.4.1 Changes in Strabismus Prevalence
- •1.4.2 Changes in Strabismus Surgery Rates
- •1.5 Worldwide Incidence and Prevalence of Childhood Strabismus
- •1.6 Incidence of Adult Strabismus
- •References
- •2.1 Binocular Alignment System
- •2.1.2 Vergence Adaptation
- •2.1.3 Muscle Length Adaptation
- •2.2 Modeling the Binocular Alignment Control System
- •2.2.1 Breakdown of the Binocular Alignment Control System
- •2.2.4 Changes in Basic Muscle Length
- •2.2.6 Evidence Against the “Final Common Pathway”
- •2.3 Changes in Strabismus
- •2.3.1 Diagnostic Occlusion: And the Hazard of Prolonged Occlusion
- •2.3.2.1 Supporting Evidence for Bilateral Feedback Control of Muscle Lengths
- •2.4 Applications of Bilateral Feedback Control to Clinical Practice and to Future Research
- •References
- •3.1 Dissociated Eye Movements
- •3.2 Tonus and its relationship to infantile esotropia
- •3.5 Pathogenetic Role of Dissociated Eye Movements in Infantile Esotropia
- •References
- •4.1 Introduction
- •4.2.1 Binocular Correspondence: Anomalous, Normal, or Both?
- •4.3 MFS with Manifest Strabismus
- •4.3.1 Esotropia is the Most Common Form of MFS
- •4.3.2 Esotropia Allows for Better Binocular Vision
- •4.3.3 Esotropia is the Most Stable Form
- •4.4 Repairing and Producing MFS
- •4.4.1 Animal Models for the Study of MFS
- •References
- •5.1 Esotropia as the Major Type of Developmental Strabismus
- •5.1.2 Early Cerebral Damage as the Major Risk Factor
- •5.1.3 Cytotoxic Insults to Cerebral Fibers
- •5.1.5 Development of Binocular Visuomotor Behavior in Normal Infants
- •5.1.6 Development of Sensorial Fusion and Stereopsis
- •5.1.7 Development of Fusional Vergence and an Innate Convergence Bias
- •5.1.8 Development of Motion Sensitivity and Conjugate Eye Tracking (Pursuit/OKN)
- •5.1.9 Development and Maldevelopment of Cortical Binocular Connections
- •5.1.10 Binocular Connections Join Monocular Compartments Within Area V1 (Striate Cortex)
- •5.1.11 Too Few Cortical Binocular Connections in Strabismic Primate
- •5.1.12 Projections from Striate Cortex (Area V1) to Extrastriate Cortex (Areas MT/MST)
- •5.1.15 Persistent Nasalward Visuomotor Biases in Strabismic Primate
- •5.1.16 Repair of Strabismic Human Infants: The Historical Controversy
- •5.1.18 Timely Restoraion of Correlated Binocular Input: The Key to Repair
- •References
- •6. Neuroanatomical Strabismus
- •6.1 General Etiologies of Strabismus
- •6.2 Extraocular Myopathy
- •6.2.1 Primary EOM Myopathy
- •6.2.2 Immune Myopathy
- •6.2.4 Neoplastic Myositis
- •6.2.5 Traumatic Myopathy
- •6.3 Congenital Pulley Heterotopy
- •6.4 Acquired Pulley Heterotopy
- •6.5 “Divergence Paralysis” Esotropia
- •6.5.1 Vertical Strabismus Due to Sagging Eye Syndrome
- •6.5.2 Postsurgical and Traumatic Pulley Heterotopy
- •6.5.3 Axial High Myopia
- •6.6 Congenital Peripheral Neuropathy: The Congenital Cranial Dysinnervation Disorders (CCDDs)
- •6.6.1 Congenital Oculomotor (CN3) Palsy
- •6.6.3 Congenital Trochlear (CN4) Palsy
- •6.6.4 Duane’s Retraction Syndrome (DRS)
- •6.6.5 Moebius Syndrome
- •6.7 Acquired Motor Neuropathy
- •6.7.1 Oculomotor Palsy
- •6.7.2 Trochlear Palsy
- •6.7.3 Abducens Palsy
- •6.7.4 Inferior Oblique (IO) Palsy
- •6.8 Central Abnormalities of Vergence and Gaze
- •6.8.1 Developmental Esotropia and Exotropia
- •6.8.2 Cerebellar Disease
- •6.8.3 Horizontal Gaze Palsy and Progressive Scoliosis
- •References
- •7.1 Congenital Cranial Dysinnervation Disorders: Facts About Ocular Motility Disorders
- •7.1.1 The Concept of CCDDs: Ocular Motility Disorders as Neurodevelopmental Defects
- •7.1.1.1 Brainstem and Cranial Nerve Development
- •7.1.1.2 Single Disorders Representing CCDDs
- •7.1.1.3 Disorders Understood as CCDDs
- •7.2 Congenital Cranial Dysinnervation Disorders: Perspectives to Understand Ocular Motility Disorders
- •7.2.1.1 Brown Syndrome
- •Motility Findings
- •Saccadic Eye Movements
- •Comorbidity
- •Epidemiologic Features
- •Laterality
- •Sex Distribution
- •Incidence
- •Heredity
- •Potential Induction of the Syndrome
- •Radiologic Findings
- •Natural Course in Brown Syndrome
- •Intra-and Postoperative Findings
- •References
- •8.1 Amblyopia
- •8.2 What Is Screening?
- •8.2.1 Screening for Amblyopia, Strabismus, and/or Refractive Errors
- •8.2.1.1 Screening for Amblyopia
- •8.2.1.2 Screening for Strabismus
- •8.2.1.3 Screening for Refractive Error
- •8.2.1.4 Screening for Other Ocular Conditions
- •8.3 Screening Tests for Amblyopia, Strabismus, and/or Refractive Error
- •8.3.1 Vision Tests
- •8.3.3 Stereoacuity
- •8.3.4 Photoscreening and/or Autorefraction
- •8.3.6 Who Should Administer the Screening Program?
- •8.4 Treatment of Amblyopia
- •8.4.1 Type of Treatment
- •8.4.2 Refractive Adaptation
- •8.4.3 Conventional Occlusion
- •8.4.4 Pharmacological Occlusion
- •8.4.5 Optical Penalization
- •8.4.7 Treatment Compliance
- •8.4.8 Other Treatment Options for Amblyopia
- •8.4.9 Recurrence of Amblyopia Following Therapy
- •8.5 Quality of Life
- •8.5.1 The Impact of Amblyopia Upon HRQoL
- •8.5.3 Reading Speed and Reading Ability in Children with Amblyopia
- •8.5.4 Impact of Amblyopia Upon Education
- •8.5.6 The Impact of Strabismus Upon HRQoL
- •8.5.7 Critique of HRQoL Issues in Amblyopia
- •8.5.8 The Impact of the Condition or the Impact of Treatment?
- •References
- •9. The Brückner Test Revisited
- •9.1 Amblyopia and Amblyogenic Disorders
- •9.1.1 Early Detection of Amblyopia
- •9.1.2 Brückner’s Original Description
- •9.2.1 Physiology
- •9.2.2 Performance
- •9.2.3 Shortcomings and Pitfalls
- •9.3.1 Physiology
- •9.3.2 Performance
- •9.3.3 Possibilities and Limitations
- •9.4.1 Physiology
- •9.4.2 Performance
- •9.4.3 Possibilities and Limitations
- •9.5 Eye Movements with Alternating Illumination of the Pupils
- •References
- •10. Amblyopia Treatment 2009
- •10.1 Amblyopia Treatment 2009
- •10.1.1 Introduction
- •10.1.2 Epidemiology
- •10.1.3 Clinical Features of Amblyopia
- •10.1.4 Diagnosis of Amblyopia
- •10.1.5 Natural History
- •10.2 Amblyopia Management
- •10.2.1 Refractive Correction
- •10.2.2 Occlusion by Patching
- •10.2.3 Pharmacological Treatment with Atropine
- •10.2.4 Pharmacological Therapy Combined with a Plano Lens
- •10.3 Other Treatment Issues
- •10.3.1 Bilateral Refractive Amblyopia
- •10.3.3 Maintenance Therapy
- •10.4 Other Treatments
- •10.4.1 Filters
- •10.4.2 Levodopa/Carbidopa Adjunctive Therapy
- •10.5 Controversy
- •10.5.1 Optic Neuropathy Rather than Amblyopia
- •References
- •11.1 Introduction
- •11.1.2 Sensory or Motor Etiology
- •11.1.4 History
- •11.1.5 Outcome Parameters
- •11.2 Outcome of Surgery in the ELISSS
- •11.2.1 Reasons for the ELISSS
- •11.2.2 Summarized Methods of the ELISSS
- •11.2.3 Summarized Results of the ELISSS
- •11.2.4 Binocular Vision at Age Six
- •11.2.5 Horizontal Angle of Strabismus at Age Six
- •11.2.6 Alignment is Associated with Binocular Vision
- •11.3 Number of Operations and Spontaneous Reduction into Microstrabismus Without Surgery
- •11.3.1 The Number of Operations Per Child and the Reoperation Rate in the ELISSS
- •11.3.2 Reported Reoperation Rates
- •11.3.3 Test-Retest Reliability Studies
- •11.3.6 Spontaneous Reduction of the Angle
- •11.3.7 Predictors of Spontaneous Reduction into Microstrabismus
- •Appendix
- •References
- •12.1 Overview
- •12.1.2 Manifest Latent Nystagmus (MLN)
- •12.1.2.1 Clinical Characteristics of Manifest Latent Nystagmus (MLN)
- •12.1.3 Congenital Periodic Alternating Nystagmus (PAN)
- •12.1.3.1 Clinical characteristics of congenital periodic alternating nystagmus
- •12.2 Compensatory Mechanisms
- •12.2.1 Dampening by Versions
- •12.2.2 Dampening by Vergence
- •12.2.3 Anomalous Head Posture (AHP)
- •12.2.3.4 Measurement of AHP
- •12.2.3.6 Testing AHP at Near
- •12.3 Treatment
- •12.3.1 Optical Treatment
- •12.3.1.1 Refractive Correction
- •12.3.1.2 Spectacles and Contact Lenses (CL)
- •12.3.1.3 Prisms
- •12.3.1.4 Low Visual Aids
- •12.3.2 Medication
- •12.3.3 Acupuncture
- •12.3.4 Biofeedback
- •12.3.6 Surgical Treatment of Congenital Nystagmus
- •12.3.6.1 Management of Horizontal AHP
- •12.3.6.2 Management of Vertical AHP
- •12.3.6.3 Management of Head Tilt
- •Retro-Equatorial Recession of Horizontal Rectus Muscles
- •The Tenotomy Procedure
- •References
- •13.1 Dissociated Deviations
- •13.2 Surgical Alternatives to Treat Patients with DVD
- •13.2.1 Symmetric DVD with Good Bilateral Visual Acuity, with No Oblique Muscles Dysfunction
- •13.2.2 Bilateral DVD with Deep Unilateral Amblyopia
- •13.2.3 DVD with Inferior Oblique Overaction (IOOA) and V Pattern
- •13.2.4 DVD with Superior Oblique Overaction (SOOA) and A Pattern
- •13.2.5 Symmetric vs. Asymmetric Surgeries for DVD
- •13.3 Dissociated Horizontal Deviation
- •13.4 Dissociated Torsional Deviation. Head tilts in patients with Dissociated Strabismus
- •13.5 Conclusions
- •References
- •14.1 Introduction
- •14.2 Clinical and Theoretical Investigations
- •References
- •15.1 General Principles of Surgical Treatment in Paralytic Strabismus
- •15.1.1 Aims of Treatment
- •15.1.2 Timing of Surgery
- •15.1.3 Preoperative Assessment
- •15.1.4 Methods of Surgical Treatment
- •15.2 Third Nerve Palsy
- •15.2.1 Complete Third Nerve Palsy
- •15.2.2 Incomplete Third Nerve Palsy
- •15.3 Fourth Nerve Palsy
- •15.4 Sixth Nerve Palsy
- •References
- •16.1 Graves Orbitopathy (GO): Pathogenesis and Clinical Signs
- •16.1.1 Graves Orbitopathy is Part of a Systemic Disease: Graves Disease (GD)
- •16.1.2 Graves Orbitopathy−Clinical Signs
- •16.1.2.1 Clinical Changes Result in Typical Symptoms
- •16.1.3 Clinical Examination of GO
- •16.1.3.1 Signs of Activity
- •16.1.3.2 Assessing Severity of GO
- •16.1.3.3 Imaging
- •16.2 Natural History
- •16.3 Treatment of GO
- •16.3.1.1 Glucocorticoid Treatment
- •16.3.1.2 Orbital Radiotherapy
- •16.3.1.3 Combined Therapy: Glucocorticoids and Orbital Radiotherapy
- •16.3.1.4 Other Immunosuppressive Treatments and New Developments
- •16.3.2 Inactive Disease Stages
- •16.3.2.1 Orbital Decompression
- •16.3.2.2 Extraocular Muscle Surgery
- •16.3.2.3 Lid Surgery
- •16.4 Thyroid Dysfunction and GO
- •16.5.1 Relationship Between Cigarette Smoking and Graves Orbitopathy
- •16.5.2 Genetic Susceptibility
- •16.6 Special Situations
- •16.6.1 Euthyroid GO
- •16.6.2 Childhood GO
- •16.6.3 GO and Diabetes
- •References
w
Essentials in Ophthalmology |
Pediatric Ophthalmology, |
|
Neuro-Ophthalmology, Genetics |
|
B. Lorenz M. C. Brodsky |
|
Editors |
|
|
Essentials in Ophthalmology |
Glaucoma |
G. K. Krieglstein R. N. Weinreb |
Cataract and Refractive Surgery |
Series Editors |
Uveitis and Immunological Disorders |
|
|
|
Vitreo-retinal Surgery |
|
Medical Retina |
|
Oculoplastics and Orbit |
|
Pediatric Ophthalmology, |
|
Neuro-Ophthalmology, Genetics |
|
Cornea and External Eye Disease |
Editors Birgit Lorenz
Michael C. Brodsky
Pediatric
Ophthalmology,
Neuro-
Ophthalmology,
Genetics
Strabismus - New Concepts in
Pathophysiology, Diagnosis,
and Treatment
|
|
Series Editors |
Volume Editors |
Günter K. Krieglstein, MD |
Birgit Lorenz, MD |
Professor and Chairman |
Professor of Ophthalmology |
Department of Ophthalmology |
Klinik und Poliklinik für |
University of Cologne |
Augenheilkunde |
Joseph-Stelzmann-Straße 9 |
Justus-Liebig-University |
50931 Köln |
UKGM GmbH Giessen Campus |
Germany |
Friedrichstraβe 18 |
|
35392 Giessen |
Robert N. Weinreb, MD |
Germany |
Professor and Director |
|
Hamilton Glaucoma Center |
Michael C. Brodsky, MD |
Department of Ophthalmology |
Professor of Ophthalmology and Neurology |
University of California at San Diego |
Mayo Clinic |
9500 Gilman Drive |
Department of Ophthalmology |
La Jolla, CA 92093-0946 |
200 First Street SW |
USA |
Rochester, MN 55905 |
|
USA |
ISBN: 978-3-540-85850-8 |
e-ISBN: 978-3-540-85851-5 |
DOI: 10.1007/978-3-540-85851-5
Library of Congress Control Number: 2009938957
© Springer-Verlag Berlin Heidelberg 2010
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Foreword
The Essentials in Ophthalmology series represents an unique updating publication on the progress in all subspecialties of ophthalmology.
In a quarterly rhythm, eight issues are published covering clinically relevant achievements in the whole field of ophthalmology. This timely transfer of advancements for the best possible care of our eye patients has proven to be e ective. The initial working hypothesis of providing new knowledge immediately following publication in the peer-reviewed journal and not waiting for the textbook appears to be highly workable.
We are now in the third cycle of the Essentials in Ophthalmology series, having been encouraged by readSeries Editors
Preface
The field of strabismology has long su ered from a discrepancy between its levels of sophistication in practice and theory. Although its diagnostic and therapeutic armamentarium has become quite advanced, the scientific understanding of disease pathogenesis has remained rudimentary. Consequently, educational training in strabismus diagnosis and treatment has become a didactic exercise in “learning the rules.”
Recent advances in epidemiology, neuroimaging, genetics, and neurobiology have revolutionized our understanding of strabismus. Conceptualizing strabismus within an evolutionary framework has advanced our understanding of why it arises and provided new clues to its neurological underpinnings. As new information is consolidated, we are beginning to formulate a unified
philosophy of strabismus that integrates new concepts of pathogenesis into the clinic.
This book provides a compendium of chapters that highlight new ideas in the field of strabismus. We have assembled an international panel of contributors who have advanced our understanding of strabismus pathogenesis. Some chapters are new while others are derived from recent seminal articles that have challenged our understanding of strabismus diagnosis and treatment. Original sources for these chapters are appropriately acknowledged. We thank our innovative authors for their important contributions, and hope that the reader finds this edition both stimulating and enlightening.
Birgit Lorenz
Michael C. Brodsky
