- •Preface
- •Contents
- •1.1.1 The Vitreous
- •1.1.1.1 Embryology
- •1.1.1.2 The Anatomy
- •1.1.1.3 Anatomical Attachments of the Vitreous to the Surrounding Structures
- •1.1.2 The Retina
- •1.1.2.1 Embryology
- •1.1.2.2 Anatomy
- •Retinal Pigment Epithelium (RPE)
- •Photoreceptor Layer
- •Intermediary Neurones
- •Ganglion Cells
- •Retinal Blood Vessels
- •Other Fundal Structures
- •1.1.3 The Physiology of the Vitreous
- •1.2 Clinical Examination and Investigation
- •1.2.1 Using the Database
- •1.2.2 Examination of the Eye
- •1.2.2.1 Examination Technique
- •Visual Acuity
- •1.2.2.2 The Slit Lamp
- •1.2.2.3 Binocular Indirect Ophthalmoscope
- •1.2.2.4 Using the Indenter
- •1.2.2.5 Ultrasonography
- •Posterior Vitreous Detachment (PVD)
- •Retinal Tear
- •Retinal Detachment
- •Subretinal Haemorrhage
- •Retinoschisis
- •Choroidal Elevation
- •Trauma
- •1.2.2.6 Optical Coherence Tomography
- •Time-Domain OCT
- •Colour Coding
- •Frequency-Domain OCT
- •Full-Field OCT
- •Scan Resolution
- •Images and Measurements
- •Performing the Scan
- •Macular Scan Patterns
- •Central Retinal Thickness
- •Inner Segment and Outer Segment Junction and External Limiting Membrane
- •1.2.3 Subjective Tests
- •1.2.4 The Preoperative Assessment
- •1.3 Summary
- •References
- •2: Introduction to Vitreoretinal Surgery
- •2.1 Introduction
- •2.2 Choice of Anaesthesia
- •2.3 Pars Plana Vitrectomy
- •2.3.1 Sclerotomies
- •2.3.2 Where to Place the Sclerotomies
- •2.3.3 Securing the Infusion Cannula
- •2.3.4 Checking the Infusion
- •2.3.6 The Superior Sclerotomies
- •2.3.6.1 Where to Place
- •2.3.7 Checking the View
- •2.3.8 The Independent Viewing System
- •2.3.9 Removing the Vitreous
- •2.4 Vitrectomy Cutters
- •2.5 Handling the Light Pipe
- •2.6 Use of Sclerotomy Plugs
- •2.7 The Internal Search
- •2.8 Endolaser
- •2.9 Using a Contact Lens
- •2.10 Maintaining a View
- •2.10.1 Microscope
- •2.10.3 Cornea
- •2.10.4 Blood in the Anterior Chamber
- •2.10.5 Condensation on an Intraocular Lens Implant
- •2.10.6 Cataract Formation
- •2.10.7 Pupillary Dilation
- •2.11 Closing
- •2.12 Peroperative Complications
- •2.12.1 Iatrogenic Breaks
- •2.12.1.1 Causes
- •2.12.2 Choroidal Haemorrhage
- •2.12.3 Haemorrhage from Retinal or Other Blood Vessels
- •2.12.4 Lens Touch
- •2.12.5 Hypotony
- •2.13 Postoperative Complications
- •2.13.1 Cataract
- •2.13.2 Endophthalmitis
- •2.13.3 Corneal Changes
- •2.13.4 Choroidal Haemorrhage
- •2.13.5 Raised Intraocular Pressure
- •2.13.6 Retinal Breaks and RRD
- •2.13.7 Hypotony
- •2.13.8 Scleritis
- •2.13.9 Sympathetic Uveitis
- •2.14 Adjustments for 20 Gauge Vitrectomy
- •2.14.1 Construction of Superior Sclerotomies
- •2.14.2 Priming
- •2.14.3 Self-Sealing Sclerotomies
- •2.15 Adjustments for 23 and 25 Gauge Vitrectomy
- •2.15.1 Instrumentation
- •2.15.2 Surgical Technique
- •2.15.2.1 Vitrectomy Technique
- •2.15.3 Flexibility
- •2.15.4 Indentation
- •2.15.5 Flow Rates
- •2.15.6 Trochar Internal Protrusion
- •2.15.7 Silicone Oil
- •2.16 Complications
- •2.16.1 Peroperative
- •2.16.1.1 Extrusion of the Trochar on Removal of Instrumentation
- •2.16.1.2 Conjunctival Chemosis
- •2.16.1.3 Hypotony
- •2.16.1.4 Endophthalmitis
- •2.16.2 Postoperative Retinal Break Formation
- •2.17 Advantages and Disadvantages of 23 and 25 G Systems
- •2.18 Combined Cataract Extraction and PPV
- •2.18.1 How to Decide Whether to Perform Combined Surgery
- •2.18.1.1 Accommodation
- •2.19 Biometry
- •2.20 Chandelier Systems and Bimanual Surgery
- •2.20.1 Possible Complications
- •2.21 Dyes
- •2.22 Intravitreal Injections
- •2.22.1 Injection Medications
- •2.23 Slow Release Preparations
- •2.24 Summary
- •References
- •3: Principles of Internal Tamponade
- •3.1 Gases
- •3.1.1 Principles
- •3.1.1.1 Properties
- •3.1.1.2 A Safe Method for Drawing Up Gas
- •3.1.2 Complications
- •3.1.2.1 Vision
- •3.1.2.2 Refraction
- •3.1.2.3 Cataract
- •3.1.2.5 Loss of the Gas Bubble
- •3.1.2.6 Gas in the Wrong Place
- •3.1.3 Important Postoperative Information
- •3.1.3.1 Flying or Travel to High Altitude
- •3.1.3.2 General Anaesthesia
- •3.2 Silicone Oil
- •3.2.1 Properties
- •3.2.3 Complications of Silicone Oil
- •3.2.3.1 Refractive Changes
- •3.2.3.2 Cataract
- •3.2.3.5 Cornea
- •3.2.3.6 Macular Toxicity
- •3.2.3.7 Oil in the Wrong Place
- •3.2.3.8 Emulsion
- •3.2.3.9 IOLs
- •3.2.4 Silicone Oil Removal
- •3.2.4.1 Alternative Methods
- •3.2.4.2 Retinal Redetachment Rates After Oil Removal
- •3.2.5 Heavy Silicone Oils
- •3.2.6 Heavy Liquids
- •3.2.7 ‘Light’ Heavy Liquids
- •3.3 Summary
- •References
- •4: Posterior Vitreous Detachment
- •4.1 Introduction
- •4.1.1 Symptoms
- •4.1.1.1 Floaters
- •4.1.1.2 Flashes
- •Introduction
- •Clinical Characteristics
- •4.1.2 Signs
- •4.1.2.1 Detection of PVD
- •4.1.2.2 Shafer’s Sign
- •4.1.2.3 Vitreous Haemorrhage
- •4.1.2.4 Ophthalmoscopy
- •4.1.3 Retinal Tears
- •4.1.3.1 U Tears
- •4.1.3.2 Atrophic Round Holes
- •4.1.3.3 Other Breaks
- •4.1.3.4 Progression to Retinal Detachment
- •4.1.4 Peripheral Retinal Degenerations
- •4.2 Summary
- •References
- •5: Vitreous Haemorrhage
- •5.1 Introduction
- •5.2 Aetiology
- •5.3 Natural History
- •5.4 Erythroclastic Glaucoma
- •5.5 Investigation
- •5.6 Ultrasound
- •5.7 Management
- •5.8 Surgery
- •5.9 Vitrectomy
- •5.10 Summary
- •References
- •6: Rhegmatogenous Retinal Detachment
- •6.1 Introduction
- •6.1.1 Tears with Posterior Vitreous Detachment
- •6.1.2 Breaks Without Posterior Vitreous Detachment
- •6.1.3 Natural History
- •6.1.3.1 Chronic RRD
- •6.1.3.2 Risk to the Other Eye
- •6.2 Clinical Features
- •6.2.1 Anterior Segment Signs
- •6.2.2 Signs in the Vitreous
- •6.2.3 Subretinal Fluid Accumulation
- •6.2.4 Retinal Break Patterns in RRD
- •6.2.5 Macula Off or On
- •6.3 Surgery
- •6.3.1 Flat Retinal Breaks
- •6.3.1.1 Retinopexy
- •6.3.1.2 Cryotherapy
- •6.3.1.3 Cryotherapy in the Clinic Setting
- •6.3.1.4 Laser
- •6.3.1.5 Laser in the Clinic Setting
- •6.3.2 Retinal Detachment
- •6.3.2.1 Principles
- •6.3.2.2 Break Closure
- •6.3.2.3 Relief of Traction
- •6.3.2.4 Alteration of Fluid Currents
- •6.3.2.5 Retinopexy
- •6.3.3 Pars Plana Vitrectomy
- •6.3.3.1 Introduction
- •6.3.3.2 Finding the Breaks
- •6.3.3.4 Draining Subretinal Fluid
- •6.3.3.5 When to Use Heavy Liquids
- •6.3.3.6 Removal of Heavy Liquid
- •6.3.3.7 Choice of Tamponade
- •6.3.3.8 Avoiding Retinal Folds
- •6.3.3.9 Inferior Breaks
- •6.3.3.10 Posterior Breaks
- •6.3.3.11 Multiple Breaks
- •6.3.3.12 Medial Opacities
- •6.3.3.13 Complications
- •6.3.3.14 Surgery for Eyes with No Breaks Found
- •6.3.3.15 Use of 360° Laser or Routine 360° Encirclage
- •6.3.3.16 Posturing
- •6.3.4.1 Operative Stages
- •6.3.4.2 Postoperative Care
- •6.3.4.3 Complications
- •6.3.4.4 Peroperative
- •6.3.4.5 Postoperative
- •6.3.5 Drainage Air Cryotherapy and Explant (DACE)
- •6.3.5.1 Subretinal Fluid (SRF) Drainage
- •6.3.5.2 Air Insertion
- •6.3.5.3 Complications
- •6.3.6 Pneumatic Retinopexy
- •6.3.6.1 Surgical Steps
- •6.3.6.2 Complications
- •6.4 Success Rates
- •6.5 Causes of Failure
- •6.6 Surgery for Redetachment
- •6.7 Secondary Macular Holes
- •6.8 Detachment with Choroidal Effusions
- •6.9 Removal of Explant
- •6.9.1 Diplopia
- •6.9.2 Erosion Through Conjunctiva
- •6.9.3 Infection
- •6.9.4 Cosmesis
- •6.9.5 Irritation
- •6.9.6 Surgery for Removal of the Explant
- •6.10 Summary
- •References
- •7.2 Atrophic Hole RRD with Attached Vitreous
- •7.3 Pseudophakic RRD
- •7.4 Aphakic RRD
- •7.5 Retinal Dialysis
- •7.5.1 Clinical Features
- •7.5.2 Surgery for Retinal Dialysis
- •7.5.2.1 Search
- •7.5.2.2 Cryotherapy
- •7.5.2.3 Marking the Break
- •7.5.2.4 Plombage
- •7.5.2.5 Checking the Indent
- •7.5.3 Complications
- •7.5.4 Giant Retinal Dialysis
- •7.5.5 Dialysis and PVR
- •7.5.6 Par Ciliaris Tear
- •7.6 Giant Retinal Tear
- •7.6.1 Clinical Features
- •7.6.2 Stickler’s Syndrome
- •7.6.3 Surgery for Giant Retinal Tear
- •7.6.3.1 Heavy Liquids
- •7.6.3.2 Retinopexy
- •7.6.3.3 Trans-scleral Illumination Technique
- •7.6.3.4 Silicone Oil Insertion
- •7.6.3.5 Choice of Endotamponade
- •7.6.3.6 Success Rates
- •7.6.3.7 Removal of the Silicone Oil
- •7.6.3.8 The Other Eye
- •7.7 Retinal Detachment in High Myopes
- •7.7.1 Clinical Features
- •7.7.2 Surgery
- •7.8.1 Clinical Features
- •7.8.1.1 Infantile Retinoschisis
- •7.8.1.2 Senile Retinoschisis
- •7.8.1.4 Retinal Detachment in Retinoschisis
- •7.8.2 Surgery
- •7.9 Juvenile Retinal Detachment
- •7.10 Atopic Dermatitis
- •7.11 Refractive Surgery
- •7.12 Congenital Cataract
- •7.13 Others
- •7.14 Summary
- •References
- •8: Proliferative Vitreoretinopathy
- •8.1 Introduction
- •8.2 Pathogenesis
- •8.3 Clinical Features
- •8.3.1 Introduction
- •8.3.2 Grading
- •8.3.3 Risk of PVR
- •8.4 Surgery
- •8.4.1 Mild PVR
- •8.4.2 Moderate PVR
- •8.4.3 Severe PVR
- •8.4.3.1 The Relieving Retinectomy
- •8.4.4 Radial Retinotomy
- •8.4.5 Silicone Oil Injection
- •8.4.6 Applying Laser
- •8.4.7 ROSO Plus
- •8.4.8 Very Severe PVR
- •8.4.9 Choice of Endotamponade
- •8.4.9.1 Silicone Oil or Perfluoropropane Gas
- •8.4.9.2 Heavy Oils
- •8.4.10 Removal of Subretinal Bands
- •8.4.11 Adjunctive Therapies
- •8.4.12 Success Rates
- •8.4.13 Postoperative Complications
- •8.5 Summary
- •References
- •9: Macular Hole
- •9.1 Introduction
- •9.2 Idiopathic Macular Hole
- •9.2.1 Clinical Features
- •9.2.1.1 Introduction
- •9.2.1.2 Watzke–Allen Test
- •9.2.1.3 Grading
- •9.2.1.4 Natural History
- •9.2.1.5 Optical Coherence Tomography
- •9.2.2 Secondary Macular Holes
- •9.2.3 Lamellar and Partial Thickness Holes
- •9.2.4 Surgery
- •9.2.4.1 Introduction
- •9.2.4.2 Surgery
- •9.2.4.3 Peeling the Posterior Hyaloid Membrane
- •9.2.4.4 ILM Peel and Other Adjunctive Therapies
- •9.2.4.5 Choice of Tamponade
- •9.2.4.6 Postoperative Posturing of the Patient
- •9.2.4.9 Visual Field Loss
- •9.2.5 Success Rates
- •9.2.6 Reoperation
- •9.3 Microplasmin
- •9.4 Summary
- •References
- •10.1 Clinical Features
- •10.1.1 Other Conditions
- •10.1.2 Secondary Macular Pucker
- •10.2 Surgery
- •10.3 Success Rates
- •10.5 Membrane Recurrence
- •10.6 Summary
- •References
- •11: Choroidal Neovascular Membrane
- •11.1 Age-Related Macular Degeneration
- •11.1.1 Clinical Features
- •11.1.2 Vitreous Haemorrhage and CNV
- •11.1.3 Pneumatic Displacement of Subretinal Haemorrhage
- •11.1.4 Surgery for Failed Anti-VEGF Therapy
- •11.1.4.1 Introduction
- •11.1.4.2 360° Macular Translocation
- •11.1.6 Success Rates
- •11.2 Choroidal Neovascular Membrane Not from ARMD
- •11.2.1 Introduction
- •11.2.2 Surgery
- •11.3 Summary
- •References
- •12: Diabetic Retinopathy
- •12.1 Introduction
- •12.2 Diabetic Retinopathy
- •12.2.1 Introduction
- •12.2.1.1 Diabetic Retinopathy Grading
- •12.2.2 Diabetic Vitreous Haemorrhage
- •12.2.3 Progression to Vitreous Haemorrhage and Tractional Retinal Detachment
- •12.2.3.1 Clinical Features
- •12.2.3.2 Surgery
- •12.2.4 Diabetic Retinal Detachment
- •12.2.4.1 Clinical Features
- •12.2.4.2 Surgery
- •12.2.4.3 Tractional Retinal Detachment
- •12.2.4.4 Peroperative Panretinal Photocoagulation
- •12.2.4.6 Bimanual Surgery
- •12.2.4.7 Dealing with Bleeding Vessels
- •12.2.4.8 Iatrogenic Breaks
- •12.2.4.9 Silicone Oil
- •12.2.4.10 Combined TRD and RRD
- •12.2.5 Postoperative Complications
- •12.2.5.1 Vitreous Haemorrhage
- •12.2.5.2 Rhegmatogenous Retinal Detachment
- •12.2.5.3 Iris Neovascularisation
- •12.2.5.4 Phthisis Bulbi
- •12.2.5.5 Maculopathy
- •12.2.5.6 Survival After Surgery
- •12.2.6 Success Rates
- •12.2.7 Diabetic Maculopathy
- •References
- •13: Other Vascular Disorders
- •13.1 Introduction
- •13.2 Retinal Vein Occlusion
- •13.2.1 Chorioretinal Anastomosis
- •13.2.2 Arteriovenous Decompression
- •13.2.3 Radial Optic Neurotomy
- •13.2.4 Intravitreal Steroid and Anti-VEGF Agents
- •13.2.5 Tissue Plasminogen Activator
- •13.3 Sickle-Cell Disease
- •13.3.1 Introduction
- •13.3.2 Types of Sickle-Cell Disease
- •13.3.3 Systemic Investigation
- •13.3.4 Inheritance and Race
- •13.3.5 Systemic Manifestations
- •13.3.6 Ophthalmic Presentation
- •13.3.7 Laser Therapy
- •13.3.8 Surgery
- •13.3.9 Visual Outcome
- •13.3.10 Screening
- •13.3.11 Survival
- •13.4 Retinal Vasculitis
- •13.5 Central Retinal Artery Occlusion
- •13.6 Summary
- •References
- •14: Trauma
- •14.1 Introduction
- •14.3 Contusion Injuries
- •14.3.1 Clinical Presentation
- •14.3.2 Types of Retinal Break
- •14.3.2.1 Dialysis
- •14.3.2.2 Pars Ciliaris Tears
- •14.3.2.3 Ragged Tear in Commotio Retinae
- •14.3.2.4 Giant Retinal Tears
- •14.3.3 Surgery
- •14.3.4 Visual Outcome
- •14.4 Rupture
- •14.4.1 Clinical Presentation
- •14.4.2 Surgery
- •14.4.3 Visual Outcome
- •14.5 Penetrating Injury
- •14.5.1 Clinical Presentation
- •14.5.1.1 Endophthalmitis
- •14.5.1.2 Retinal Detachment
- •14.5.2 Surgery
- •14.5.3 Visual Outcome
- •14.6 Trauma Scores
- •14.7 Intraocular Foreign Bodies
- •14.7.1 Clinical Presentation
- •14.7.1.1 Diagnostic Imaging
- •14.7.2 IOFB Materials
- •14.7.3 Surgery
- •14.7.4 The Primary Procedure
- •14.7.5 PPV: The Anterior Segment
- •14.7.5.1 The Lens
- •14.7.6 PPV: The Posterior Segment
- •14.7.7 The Magnet
- •14.7.8 Visual Outcome
- •14.7.9 Siderosis
- •14.8 Perforating Injury
- •14.9 Sympathetic Ophthalmia
- •14.10 Proliferative Vitreoretinopathy
- •14.11 Phthisis Bulbi
- •14.12 When Not to Operate
- •14.12.1 At Presentation
- •14.12.2 Postoperatively
- •14.13 Summary
- •References
- •15.1 Introduction
- •15.2 Dropped Nucleus
- •15.2.1 Clinical Features
- •15.2.2 Surgery
- •15.2.2.1 Primary Management
- •15.2.2.2 Vitrectomy Surgery
- •15.2.2.4 Success Rates
- •15.3 Intraocular Lens Dislocations
- •15.3.1 Clinical Presentation
- •15.3.2 Surgery
- •15.3.2.1 Removal of the IOL
- •15.4 Surgical Options for the Aphakic Eye
- •15.4.1 McCannell Sutured IOL
- •15.4.2 Iris-Clip IOL
- •15.4.3 Haptic Capture Method
- •15.4.4 Anterior Chamber IOL
- •15.4.5 Sutured Posterior Chamber IOLs
- •15.4.6 The Aphakic and Aniridic Eye
- •15.5 Postoperative Endophthalmitis
- •15.5.1 Clinical Features
- •15.5.2 Surgery
- •15.5.2.1 Vitreous Tap
- •15.5.2.2 Vitreous Biopsy
- •15.5.3 Infective Organisms
- •15.5.4 Antibiotics
- •15.5.5 The Role of Vitrectomy
- •15.5.6 Success Rates
- •15.6 Chronic Postoperative Endophthalmitis
- •15.7 Needlestick Injury
- •15.7.1 Clinical Features
- •15.7.2 Surgery
- •15.8 Intraocular Haemorrhage
- •15.9 Retinal Detachment
- •15.10 Chronic Uveitis
- •15.11 Postoperative Cystoid Macular Oedema
- •15.12 Postoperative Vitreomacular Traction
- •15.13 Postoperative Choroidal Effusion
- •15.13.1 External Drainage
- •15.14 Summary
- •References
- •16: Uveitis and Allied Disorders
- •16.1 Introduction
- •16.2 Non-infectious Uveitis of the Posterior Segment
- •16.2.2 Retinal Detachment
- •16.2.3 Cystoid Macular Oedema
- •16.2.4 Hypotony
- •16.2.5 The Vitreous Biopsy
- •16.2.6 Sampling at the Beginning of a PPV
- •16.2.6.1 Special Situations
- •16.3 Acute Retinal Necrosis
- •16.3.1 Clinical Features
- •16.3.2 Surgery
- •16.3.2.1 For Diagnosis
- •16.3.2.2 For Treatment
- •16.3.3 Visual Outcome
- •16.4 Cytomegalovirus Retinitis
- •16.4.1 Clinical Features
- •16.4.2 Surgery
- •16.4.2.1 For Diagnosis
- •16.4.2.2 For Treatment
- •16.4.3 Visual Outcome
- •16.5 Fungal Endophthalmitis
- •16.5.1 Clinical Features
- •16.5.2 Surgery
- •16.5.2.1 For Diagnosis
- •16.5.2.2 For Treatment
- •16.5.3 Visual Outcome
- •16.6 Other Infections
- •16.6.1 Clinical Features
- •16.6.2 Surgery
- •16.6.2.1 For Diagnosis
- •16.6.2.2 Chorioretinal Biopsy
- •16.6.2.3 For Treatment
- •16.6.3 Visual Outcome and Survival
- •16.7 Paraneoplastic Retinopathy
- •16.8 Summary
- •References
- •17: Miscellaneous Conditions
- •17.1 Vitrectomy for Vitreous Opacities
- •17.2 Vitreous Anomalies
- •17.2.1 Persistent Hyperplastic Primary Vitreous
- •17.2.2 Asteroid Hyalosis
- •17.2.3 Amyloidosis
- •17.3 Retinal Haemangioma and Telangiectasia
- •17.4 Optic Disc Anomalies
- •17.4.1 Optic Disc Pits and Optic Disc Coloboma
- •17.4.2 Morning Glory Syndrome
- •17.5 Retinochoroidal Coloboma
- •17.6 Marfan’s Syndrome
- •17.7 Retinopathy of Prematurity
- •17.8 Uveal Effusion Syndrome
- •17.8.1 Clinical Features
- •17.8.2 Surgery
- •17.9 Terson’s Syndrome
- •17.10 Disseminated Intravascular Coagulation
- •17.11 Retinal Prosthesis
- •17.12 Summary
- •References
- •Glossary of Abbreviations
- •Others in Database
- •Appendices
- •Useful Formulae and Rules
- •Cryotherapy
- •Fluids (i.e. Both Gases and Liquids)
- •Gases
- •Liquids
- •Ultrasound
- •Diffusion and Viscosity
- •Visual Acuity
- •Diffusion
- •Fick’s Law
- •Stokes-Einstein
- •Darcy’s Law
- •Starling’s Law
- •Index
18 |
1 Anatomy and Clinical Examination of the Eye |
|
|
1.3Summary
A working knowledge of the anatomy of the retina is of great importance to the surgeon. Learn to examine the eye to a high standard, and obtain the basic investigational skills of ocular ultrasonography and optical coherence tomography.
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