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Surgical Techniques in Ophthalmology: Retina & Vitreous Surgery
Ashok Garg, T Mark Johnson, Jorge L Alio, José Maria Ruiz-Moreno, Lalit Verma, João J Nassaralla
SECTION I: SURGICAL MANAGEMENT OF VITREORETINAL DISEASES
CHAPTER 1:
Principles of Vitrectomy
INTRODUCTION
BASIC PRINCIPLES
OBJECTIVES OF VITRECTOMY
SURGICAL STEPS OF VITRECTOMY
Preoperative Preparation
Anesthesia
Positioning of the Patient
Conjunctival Opening
Sclerotomy
Lens Removal
Visualization
Vitrectomy
Special Techniques
CHAPTER 2:
Principles of Scleral Buckling Surgery
INTRODUCTION
BASIC PRINCIPLES
SURGICAL STEPS OF SCLERAL BUCKLING SURGERY
Segmental Buckling
Segmental Sclera Buckling with Encirclage
Preoperative Preparation
Anesthesia
Positioning of the Patient
Conjunctival Opening
Opening the Quadrants
Muscle Tagging
Examination of the Quadrants
Localization of the Retinal Break
Retinopexy
Placement of the Scleral Buckle
Drainage of Subretinal Fluid
Tightening of the Buckle
Closure
COMPLICATIONS OF SCLERAL BUCKLING SURGERY
Intraoperative Complications4
Postoperative Complications
CHAPTER 3:
Intraocular Tamponade: Principles and Techniques
INTRODUCTION
INDICATIONS FOR USE OF SILICONE OIL AS ENDOTAMPONADE
INDICATIONS FOR USE OF GASES FOR ENDOTAMPONADE (SULFUR HEXAFLUORIDE SF6, PERFLUOROPROPANE C3F8)
INDICATIONS FOR USE OF PERFLUOROCARBON LIQUIDS (PFCL)
TECHNIQUE
Gas Endotamponade
Silicone Oil Endotamponade
Intraoperative Use of Perfluorocarbons Liquids
CHAPTER 4:
Management of Diabetic Retinopathy
INTRODUCTION
LASER PHOTOCOAGULATION
Indications
PROLIFERANT DIABETIC RETINOPATHY
CRYOTHERAPY
SURGERY
CHAPTER 5:
Management of Retinal Vascular Occlusions
INTRODUCTION
CENTRAL RETINAL VEIN OCCLUSION
Pathophysiology
Diagnosis
Nonischemic CRVO
Ischemic CRVO
Treatment
BRANCH RETINAL VEIN OCCLUSION
Treatment
MANAGEMENT OF RETINAL ARTERY OCCLUSION
Pathogenesis
Therapeutic Options
NEW PROCEDURES
Management of Branch Retinal Vein Occlusion by YAG Laser
Surgery with Embolus Removal
CONCLUSION
CHAPTER 6:
Retinal Detachment
EPIDEMIOLOGY
PATHOGENESIS
CLINICAL FEATURES
MANAGEMENT
Principles of Management
Pneumatic Retinopexy
Inclusion Criteria
Exclusion Criteria
Methods
Results
Scleral Buckle
Indications
Methods13
Results
Complications
Vitrectomy
Indications
Methods
Results
Complications
PROGNOSIS
CHAPTER 7:
Age-related Macular Degeneration
DRY AMD
Introduction
Prevalence
Risk Factors
Clinical Signs and Symptoms
Symptoms
Signs
Investigations
Fluorescein Angiography
Macular Perimetry (Fig. 3)
Differential Diagnosis
Treatment
Antioxidant Therapy
Laser
Inferences
EXUDATIVE AMD
Introduction
Prevalence
Incidence
Clinical Signs and Symptoms
Symptoms
Signs (Fig. 4)
Investigations
Fluorescein Angiography (Figs 5A and B)
ICG Angiography
OCT
Differential Diagnosis
Treatment
Focal Laser (Figs 6A and B)
Photodynamic Therapy (Figs 7A and B)
Transpupillary Thermotherapy
Intravitreal Anti-VEGF Therapy (Figs 8A to D)
Intravitreal Steroids
Submacular Surgery
Macular Translocation
Inferences
AMD VARIANTS
RETINAL ANGIOMATOUS PROLIFERATION
Introduction
Classification
Clinical Signs and Symptoms (Fig. 9A)
Investigations (Figs 9B to C)
Fluorescein Angiography
OCT
Treatment
Methods
Results
Inferences
POLYPOIDAL CHOROIDAL VASCULOPATHY
Introduction
Clinical Signs and Symptoms
Investigations (Figs 10A and B)
Management
Inferences
CHAPTER 8:
Management of Retinal Telangiectasia
INTRODUCTION
CLASSIFICATION
MANAGEMENT
CHAPTER 9:
Management of Retinal Macroaneurysm
ACQUIRED RETINAL MACROANEURYM (ARM)
CHAPTER 10:
Management of Vitreous Diseases
ASTEROID HYALOSIS
Introduction
Clinical Signs and Symptoms
Differential Diagnosis
Management
HEREDITARY VITREORETINOPATHIES
Stickler's Syndrome
Introduction
Clinical Symptoms and Signs
Investigation
Treatment
Inference
Wagner's Disease
Clinical Signs and Symptoms
Treatment
Familial Exudative Vitreoretinopathy
Clinical Signs and Symptoms
Investigation
Treatment
Fabre-Goldmann Disease
Clinical Signs and Symptoms
Investigation
Treatment
Hereditary Retinoschisis
Investigation
Management
CHAPTER 11:
Vitreous Opacities
INTRODUCTION
PATHOPHYSIOLOGY
For Single Vitreous Opacities
For Multiple Scattered Vitreous Opacities
CLINICAL SIGNS AND SYMPTOMS
Symptoms
Signs
INVESTIGATIONS
DIFFERENTIAL DIAGNOSIS
Opaque Sheets Anterior to the Vitreous
Pseudoglioma Leukokoria
Treatment
PROGNOSIS
CHAPTER 12:
Intraocular Bevacizumab (Avastin®) for Choroidal Neovascularization
INTRODUCTION
TREATMENT
CHAPTER 13:
Optic Neuritis and Retinochoroiditis
OPTIC NEURITIS
RETINOCHOROIDITIS
CHAPTER 14:
Investigations in Posterior Segment Diseases I: Fundus Fluorescein Angiography and Optical Coherence Tomography
FUNDUS FLUORESCEIN ANGIOGRAPHY
Introduction
Chemical Properties of Fluorescein
Principle
Fundus Camera
Contraindictions for Fluorescein Angiography
Technique
Side Effects and Complications of Fluorescein Angiography
Normal Fluorescein Angiogram
Phases of the Angiogram
Abnormal Angiogram
Hypofluorescence
Hyperfluorescence
Fluorescein Angiography in Various Fundus Diseases
Tumors
OPTICAL COHERENCE TOMOGRAPHY
Principle of OCT
Image Display
CHAPTER 15:
Investigations in Posterior Segment Diseases II: Fundus Photography
INTRODUCTION
BENEFITS OF DIGITAL FUNDUS PHOTOGRAPHY
AGE-RELATED MACULAR DEGENERATION (ARMD)
DIABETIC RETINOPATHY
ASTEROID HYALOSIS
CENTRAL SEROUS RETINOPATHY
CENTRAL RETINAL VEIN OCCLUSION
BRANCH RETINAL VEIN OCCLUSION
CENTRAL RETINAL ARTERY OCCLUSION
MEDULLATED NERVE FIBERS
HEMORRHAGES
PAPILLEDEMA WITH MACULAR STAR
ANGIOID STREAKS WITH MACULAR SCAR
HEREDOMACULAR DEGENeRATION (HMD)
HYPERTENSIVE RETINOPATHY
MACULAR HOLE
MELANOCYTOMA
NEURORETINITIS
CHOROIDAL NEOVASCULAR MEMBRANE (CNVM)
PARAFOVEAL TELANGIECTASIS
MYOPIC FUNDUS
TRAUMA
POSTERIOR UVEITIS
TESSELLATED FUNDUS
CHAPTER 16:
Management of Vitreomacular Traction Syndromes
VITREOMACULAR TRACTION
Epidemiology
Etiology
Idiopathic
Diabetic
Inflammatory
Clinical Features
Symptoms
Signs
Investigations
OCT (Fig. 1)
Fluorescein Angiography
Management (Figs 2A to D)
Observation
Vitrectomy
EPIRETINAL MEMBRANES
Epidemiology
Prevalence5-7
Incidence8
Bilateral
Etiology
Pathogenesis
Clinical Features
Symptoms
Signs
Investigations
Fluorescein Angiography
OCT
Management
Observation
Vitrectomy
MACULAR HOLE
Epidemiology
Prevalence
Risk Factors
Etiology
Idiopathic
Trauma
Pathogenesis
Clinical Features
Symptoms
Signs
Investigations
Autofluorescence Imaging (Fig. 16)
Fluorescein Angiography (Fig. 17)
Management
Observation
Vitrectomy
CHAPTER 17:
Management of Pediatric Retinal Detachments
INTRODUCTION
CHALLENGES UNIQUE TO PEDIATRIC RETINAL DETACHMENT
SURGICAL EMBRYOLOGY
SURGICAL APPROACH
PRINCIPLES OF SURGERY AND DETAILED EVALUATION
Visual Acuity Assessment
Examination Under Anesthesia
Precautions
Fellow Eye Evaluation
Surgical Anatomy
Surgical Technique
SPECIFIC CLINICAL SITUATIONS
Retinopathy of Prematurity
Indications of Treatment
Aim of Treatment
Laser Protocol7
Familial Exudative Vitreoretinopathy (FEVR) (Figs 5 to 7)
PHPV/PFV Syndrome12,13
Definition
Management
Retinoschisis14
Clinical Features
Management
Surgery in Older Children
Indications
Specific Concerns in Pediatric Vitreoretinal Surgery
Decision Making for Prophylactic Treatment in Pediatric Retinal Disorders
Postoperative Management
CHAPTER 18:
Management of Pediatric Ocular Trauma
INTRODUCTION
EVALUATION
History
Examination
Visual Acuity
Ocular Examination
SPECIFIC EYE INJURIES
Birth Trauma
Periorbital Ecchymosis and Edema
Corneal Damage (Breaks in Descemet's Membrane)
Retinal Hemorrhages
Eyelid Lacerations
Corneal and Conjunctival Foreign Bodies (Figs 2 and 3)
Subconjunctival Hemorrhage
Corneal Penetration (Fig. 4)
Traumatic Hyphema
Traumatic Cataract
Vitreous and Retinal Conditions that can be Caused by Trauma
Intraocular Foreign Body
Commotio Retinae
Choroidal Rupture
Retinitis Sclopeteria
Traumatic Macular Hole
Traumatic Retinal Detachment
Child Abuse
Eye Injury Prevention
SUMMARY
CHAPTER 19:
Management of Blunt Retinal Trauma
INTRODUCTION
MECHANISM OF DAMAGE IN BLUNT TRAUMA
INITIAL EVALUATION
INDIVIDUAL PATHOLOGIES DESCRIPTION
Commotio Retinae
Definition and Clinical Findings
Histopathology
Management
Traumatic Macular Hole
Initial Concepts
Pathogenesis
Studies of Mechanical Forces
Treatment
Traumatic Retinal Tears (Retinal Breaks)
Traumatic Retinal Detachment
Mechanism of Pathology
Management
Vitreous Hemorrhage
Vitreous Base Avulsion
Choroidal Rupture
Definition and Clinical Findings
Histopathology
Diagnosis
Management
Prognosis
Optic Nerve Avulsion
Definition and Clinical Findings
Mechanisms of Injury
Diagnosis
Management
Conclusion
Chorioretinitis Sclopetaria
Definition
Diagnosis
Treatment
Purtscher's Retinopathy
Definition and Causes
Histopathology
Diagnosis
Management
CHAPTER 20:
Open Trauma to the Posterior Segment of the Eye
INTRODUCTION
EPIDEMIOLOGY
CLASSIFICATION OF OCULAR TRAUMA
PHYSIOPATHOLOGY OF THE OCULAR TRAUMA
CLINICAL SIGNS AND SYMPTOMS
DIAGNOSIS
CLINICAL EVALUATION
INVESTIGATIONS
MANAGEMENT AND TREATMENT
Antibiotic Prophylaxis
Surgical Closure of the Wound
Vitrectomy
Lensectomy
Treatment of Perforating Open Wounds of the Globe
CHAPTER 21:
Traumatic Retinopathies
COMMOTIO RETINAE
Etiology and Pathology
Clinical Features
Diagnostic Testing
Treatment/Prognosis
TRAUMATIC MACULAR HOLE
Etiology and Pathology
Clinical Features
Treatment and Prognosis
CHOROIDAL RUPTURE
Etiology and Pathogenesis
Clinical Features
Diagnostic Testing
Treatment and Prognosis
CHORIORETINITIS SCLOPETARIA
Etiology and Pathogenesis
Clinical Features
Treatment and Prognosis
PURTSCHER'S RETINOPATHY
Etiology and Pathogenesis
Clinical Features
Diagnostic Testing
Treatment and Prognosis
VALSALVA RETINOPATHY
Etiology and Pathogenesis
Clinical Features
Treatment and Prognosis
SHAKEN BABY SYNDROME/CHILD ABUSE
Etiology and Pathogenesis
Clinical Features
Diagnostic Testing
Treatment and Prognosis
RETINAL TEARS, RETINAL DIALYSIS AND DETACHMENTS
Etiology and Pathogenesis
Clinical Features
Treatment and Prognosis
CHAPTER 22:
Laser Photocoagulation in Retinopathy of Prematurity
INTRODUCTION
SCREENING PROTOCOL
LASER PHOTOCOAGULATION IN ROP, TIMING AND STAGING
TECHNIQUES OF LASER PHOTOCOAGULATION
Required Personnel and Equipment
Neonatology Clearance for Laser Procedure
Dilatation of Pupil
Treatment Strategy
POSTLASER MEDICATION, FOLLOW-UP AND MANAGEMENT
COMPLICATIONS FROM LASER PHOTOCOAGULATION
OUTCOME OF LASER PHOTOCOAGULATION
Laser vs Cryotherapy
Diode vs Argon Laser
PITFALLS OF LASER TREATMENT IN ROP
SUMMARY
CHAPTER 23:
Laser Treatment for Retinal Holes, Tears and Peripheral Retinal Degenerations
INTRODUCTION
POSTERIOR VITREOUS DETACHMENT
INNOCUOUS PERIPHERAL RETINAL DEGENERATIONS NOT REQUIRING LASER TREATMENT
PERIPHERAL RETINAL DEGENERATIONS THAT MAY LEAD TO RETINAL HOLE OR TEAR FORMATION
Lattice Degeneration
Snail Track Degeneration
Degenerative Retinoschisis
Meridional Folds
White Without Pressure
Cystic Retinal Tufts
PARTIAL-THICKNESS RETINAL TEAR
Paravascular Tear
Vitreous Base Tear
FULL-THICKNESS RETINAL BREAKS
Retinal Holes (Figs 1 to 3)
Tractional Retinal Tears (Figs 4 to 6)
SUBCLINICAL RETINAL DETACHMENT
TREATMENT PROTOCOL
Anesthesia
Technique (Figs 1 and 6)
Slitlamp Delivery
Indirect Ophthalmoscope Delivery
Complications of Laser Prophylaxis
Postoperative Follow-up
CHAPTER 24:
An Update on Photodynamic Therapy
INTRODUCTION
THE PATHOPHYSIOLOGICAL MECHANISM
RATIONALE FOR DOSE SELECTION AND TIMING OF LASER
TECHNIQUE OF PDT
POST-TREATMENT PRECAUTIONS FOLLOWING PDT
ADVERSE EFFECTS OF VERTEPORFIN
Systemic Adverse Effects
Ocular Adverse Effects
POST-TREATMENT FOLLOW-UP
INDICATIONS FOR TREATMENT
Photodynamic Therapy as Monotherapy
Indications for Retreatment
OUTCOMES OF PDT WITH VERTEPORFIN
What can the Patient Expect?
Classic CNV due to ARMD
Occult CNV due to ARMD
CNV due to Myopia
CNV due to Angioid Streaks
Idiopathic CNV
DEVELOPMENTS IN PHOTODYNAMIC THERAPY
PDT: CURRENT STATUS
CHAPTER 25:
Transpupillary Thermotherapy in Age-related Macular Degeneration
INTRODUCTION
Hyperthermia and Transpupillary Thermotherapy
In Search for Newer Treatment Modality in Wet ARMD
TRANSPUPILLARY THERMOTHERAPY
Indications of Transpupillary Thermotherapy in Age-gelated Macular Degeneration
Conditions where Transpupillary Thermotherapy is Dangerous or Contraindicated
Technique of Transpupillary Thermotherapy
Variables that Decide the Power Settings in Transpupillary Thermotherapy
Difficult Situations while Calculating Power Settings
What if Reaction (whitening) is Visible while doing Transpupillary Thermotherapy
Assessment and Indicators of Good or Adequate Response Following Transpupillary Thermotherapy
Need for Retreatment
OUR EXPERIENCE WITH TRANSPUPILLARY THERMOTHERAPY
ROLE OF TRANSPUPILLARY THERMOTHERAPY IN PRESENT ERA
TRANSPUPILLARY THERMOTHERAPY — FUTURISTIC TRENDS
CHAPTER 26:
Retained IOFB Management
INTRODUCTION
PRIMARY GOAL IN MANAGEMENT
Evaluation
History
Slit-lamp Examination
Indirect Ophthalmoscopy
LOCALIZATION OF IOFB
USG—B-scan
Plain X-ray
CT Scan—Gold Standard
MRI-Rarely Required
MANAGEMENT
Timing to Perform Surgery
IOFBs in Anterior Segment
IOFBs in Posterior Segment
External Approach
Internal Approach—Pars Plana Surgery
Risk of Traumatic Endophthalmitis
CHAPTER 27:
Management of Traumatic Hemorrhages to the Posterior Segment
INTRODUCTION
PATHOGENESIS
Vitreous Hemorrhages
Retrohyaloidal Hemorrhages
Intraretinal Hemorrhages
Choroidal Hemorrhages
Papillary and Peripapillary hemorrhages
Indirect Trauma
MANAGEMENT
Medical Management
Surgical Management
CHAPTER 28:
Management of Suprachoroidal Hemorrhage
INTRODUCTION
CAUSES
CLINICAL FEATURES
SCH Mounds on Ophthalmoscopy
B-scan Ultrasonography
MANAGEMENT
Medical Management
Surgical Management
Indications for Surgical Intervention
Technique for SCH Drainage
Appositional SCH without RD
SCH with Coexistent RD/Vitreous Incarceration
Complications
CHAPTER 29:
Management of Postoperative Endophthalmitis
INTRODUCTION
TREATMENT
PROPHYLAXIS
CHAPTER 30:
Management of Eales’ Disease
CLINICAL FEATURES
PROGNOSIS
TREATMENT
CHAPTER 31:
Management of Retinal Tumors
RETINOBLASTOMA
Introduction
Clinical Signs and Symptoms
Differential Diagnosis
Investigations
Treatment
Cryotherapy
Laser Photocoagulation
Transpupillary Thermotherapy
Brachytherapy Plaque
External Beam Radiotherapy
Enucleation
Orbital Exenteration
Chemotherapy
Systemic Chemotherapy Drugs and Disk Schedules
Follow-up Schedule
Prognosis
INTERNATIONAL CLASSIFICATION (NEW)
RETINAL CAPILLARY HEMANGIOMA
Introduction
Clinical Signs and Symptoms
Investigations
Differential Diagnosis
Treatment
Prognosis
RETINAL CAVERNOUS HEMANGIOMA
Introduction
Clinical Signs and Symptoms
Investigations
Differential Diagnosis
Treatment
Prognosis
VASOPROLIFERATIVE TUMOR OF THE RETINA
Introduction
Clinical Signs and Symptoms
Investigations
Differential Diagnosis
Treatment
Prognosis
RETINAL ASTROCYTOMA
Introduction
Clinical Signs and Symptoms
Investigations
Differential Diagnosis
Treatment
Prognosis
CHOROIDAL MELANOMA
Introduction
Clinical Signs and Symptoms
Investigations
Differential Diagnosis
Treatment
Prognosis
SOLITARY CHOROIDAL HEMANGIOMA
Introduction
Clinical Signs and Symptoms
Investigations
Differential Diagnosis
Treatment
Progonsis
SECTION II: RECENT ADVANCES IN MANAGEMENT OF VITREORETINAL DISEASES
CHAPTER 32:
Macular Translocation with 360 Degrees Retinotomy
INTRODUCTION
INDICATIONS
SURGICAL PROCEDURE
CONCLUSION
CHAPTER 33:
Microincision Vitreous Surgery (MIVS): Technique and Instrumentation
INTRODUCTION
ADVANTAGES AND INDICATIONS OF MIVS
SCLEROTOMY CONSTRUCTION (WOUND)
Two Step Incision
One Step Incision
Instrumentation for MIVS
COMPLICATION
CONCLUSION
CHAPTER 34:
An Update on Diabetic Retinopathy
PREVALENCE OF DIABETES
INCIDENCE OF DIABETIC RETINOPATHY
PREVALENCE
DIABETIC MACULAR EDEMA
Pathogenesis
Clinical Features of Macular Edema
MACULAR ISCHEMIA
Investigations
Fluorescein Angiography (Figs 3A to C)
OCT
Management
Laser Photocoagulation
ETDRS: Macular Edema Outcome Measure14
Intravitreal Triamcinolone
Bevacizumab
Pegaptanib
Pars Plana Vitrectomy (Figs 4A to C)
PROLIFERATIVE DIABETIC RETINOPATHY
Clinical Features
Management
Observation
Laser Photocoagulation (Fig. 7)
Pars Plana Vitrectomy for Vitreous Hemorrhage (Fig. 9)
Pars Plana Vitrectomy for Tractional RD (Figs 10A to C)
CHAPTER 35:
Principles and Techniques of Retinal Laser Photocoagulation
LASER LIGHT—BACKGROUND
LASER CHARACTERISTICS
MODES OF OPERATION
LASER EFFECTS
Photochemical Effects
Photoradiation
Photoablation
Thermal Effects
Photocoagulation
Photovaporization
Ionizing Effect
TYPES OF LASER
Solid State Lasers
Ruby Laser
Nd: YAG Laser
Gas Lasers
Ion Lasers
Metal Vapor Lasers
Dye Lasers
Frequency-Doubled Nd: YAG
Diode Lasers
FACTORS AFFECTING RETINAL PHOTOCOAGULATION
Scattering and Media Absorption
Absorption by Ocular Pigments
Melanin
Macular Xanthophyll
Hemoglobin
Wavelengths
Blue Wavelength
Green and Yellow Wavelengths
Red Wavelength
Laser Parameters (Power, Spot Size, Exposure Time)
PHOTOCOAGULATION DELIVERY SYSTEMS
Delivery Systems
Parfocal Delivery System
Defocus Delivery System
GRADATION OF VISIBLE LASER PHOTOCOAGULATION LESIONS
Chorioretinal Coagulation
Vascular Coagulation
SUMMARY
CHAPTER 36:
Micropulse Laser and the Treatment of Feeder Vessels in Choroidal Neovascularization
INTRODUCTION
IDENTIFICATION OF FEEDER VESSELS
TECHNIQUES OF TREATMENT OF FEEDER VESSELS
RESULTS OF FEEDER VESSEL THERAPY
Classic Choroidal Neovascularization
Occult Choroidal Neovascularization
Recurrent Choroidal Neovascularization
Retinal Angiomatous Proliferations
Retinal Choroidal Anastomoses
Polypoidal Choroidal Vasculopathy
FUTURE DIRECTIONS
CHAPTER 37:
Wide Angle Viewing System
INTRODUCTION
STEREOSCOPIC DIAGONAL INVERTOR (SDI)
INDIRECT SURGICAL NONCONTACT LENS SYSTEMS
Binocular Indirect Ophthalmomicroscope
BIOM 3
Instrumentation and Maneuvering
Sterilization
EIBOS
Sterilization
WIDE ANGLE INDIRECT SURGICAL CONTACT LENS SYSTEMS
VPFS (Vitreous Panfundoscope System)
CWF (Contact Wide Field Lens)
AVIS (Advanced Visual Instrument System, Advanced Visual Instrument Inc., New York, USA)
ROLS (Reinverting Operating Lens System)
Sterilization
CONCLUSION
CHAPTER 38:
“Grid Pattern” Argon Laser Photocoagulation for (Diffuse) Diabetic Macular Edema
INTRODUCTION
CHAPTER 39:
Central Serous Retinopathy
INTRODUCTION
PATHOPHYSIOLOGY
CLINICAL SIGNS AND SYMPTOMS
INVESTIGATIONS
DIFFERENTIAL DIAGNOSIS
TREATMENT
PROGNOSIS
CHAPTER 40:
An Update on Retina Lasers
MODELS OF LASER USED IN RETINAL PATHOLOGY
Argon Blue-green Laser (488 y 514 nm)
Argon Green Laser (514 nm)
Frequency-doubled Nd:YAG Laser (532 nm)
Dye laser (560 to 640 nm)
Yellow Spectrum (560-580 nm)
Orange Spectrum (580-610 nm)
Red Spectrum (610-640 nm)
Red Kripton Laser (647 nm)
Semiconductor Diode Laser (805-810 nm)
Mechanism of Laser Photocoagulation in the Posterior Pole
Macular Edema
Retinal Neovascularization.
Choroidal Neovascularization
Idiopathic Central Serous Chorioretinopathy
Retinal Vascular Anomalies
Nonvascular Intraocular Tumors
Retinal Tears
INFRARED DIODE LASER USED IN PDT
MECHANISM OF ACTION FOR PDT
Verteporfina (Visudyne®)
PRESENT INDICATIONS OF PDT IN RETINAL DISEASES
PDT for the CNV
AMD
CNV in High Myopia
Inflammatory and Idiopatic CNV
CNV in Angioid Streaks
PDT for Central Serous Choroidopathy (CSC)
PDT for Choroidal Hemangioma
Circumscribed Choroidal Hemangiomas
Sturge-Weber Syndrome
PDT for Retinal Capillary Hemangioma (RCH)
CHAPTER 41:
Penetrating Posterior Segment Trauma: An Update
EPIDEMIOLOGY
PATHOPHYSIOLOGY
CLASSIFICATION
1996 Ocular Trauma Classification10
CLINICAL FEATURES
INVESTIGATIONS
MANAGEMENT
Retinal Detachment
Scleral Buckle
Perfluorocarbon Liquid
Silicone Oil
Antibiotics
COMPLICATIONS
Endophthalmitis
Epidemiology
Risk Factors
Etiology
Siderosis
Chalicosis
PROGNOSIS
CHAPTER 42:
Newer and Advanced Vitrectomy Systems
INTRODUCTION
EQUIPMENTS
Vitrectomy Machine
Air Pump
Vitreous Cutter
Diathermy
Viscous Fluid Injection and Extraction System
Autogas Filling Features
Pneumatic Scissors
Laser with Endoprobe
Illumination System
CHAPTER 43:
Combined Cataract Extraction and Intravitreal Bevacizumab in Patients with Choroidal Neovascularization Due to Age-related Macular Degeneration
INTRODUCTION AND BACKGROUND
RATIONALE FOR COMBINED CATARACT EXTRACTION AND ANTI-VEGF THERAPY
SURGICAL TECHNIQUE
CHAPTER 44:
Future of Stem Cell Therapy in Retinal Diseases
INTRODUCTION
SOURCES OF STEM CELLS FOR RETINAL THERAPY
Stem Cells from Ocular Source
Retinal Stem Cells
RPE Cells
Ciliary Stem Cells
Iris stem Cells
Limbal Stem Cells
Stem Cells from Extraocular Source
Embryonic Stem Cells
Bone Marrow Stem Cells
CNS Stem Cells
Cord Blood Stem Cells
FUTURE PERSPECTIVES
INDEX
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