H. B. Dick, Oliver Schwenn

Viscoelastics in Ophthalmic Surgery (eBook, PDF)

• Format: PDF

Produktbeschreibung

This book presents the basic facts of viscoelastic substances. It introduces new, self-obtained data regarding viscoelastic rheological properties and describes the selective usages of viscoelastics in ophthalmic surgery. A clear and understandable presentation of viscoelastic physicochemical properties is emphasized to provide the practicing ophthalmic surgeon a reference guide for the selection of a suitable viscoelastic. The authors detail the broad range of viscoelastic applications, the latest trends in visco-surgery, and describe the complications arising from different surgical techniques with certain viscoelastics. Information on the production of viscoelastic substances is also included. Tables and figures are used to document research results and facilitate understanding, while a subject index and an extensive bibliography provide easy references. This book systematically presents basic knowledge and offers insight into the lastest applications in surgery as well as the most recent, relevant findings in the field of viscoelastic research.

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Produktdetails

• Verlag: Springer Berlin Heidelberg
• Seitenzahl: 152
• Erscheinungstermin: 6. Dezember 2012
• Englisch
• ISBN-13: 9783642597794
• Artikelnr.: 53104016

Inhaltsangabe

1 Overview.- Historical Development.- Current Breakdown of Viscoelastic Substances.- Analysis of Current Application Modes.- 2 Basics.- Physicochemical Properties of Ophthalmic Viscosurgical Devices.- - Flow Characteristics.- - Viscosity.- - Influence of the Shear Rate on Viscosity.- - Elasticity.- - Viscoelasticity.- - Pseudoplasticity.- - Coatability.- - Rigidity.- - Cohesiveness.- Optical Properties of Viscoelastic Substances.- Chemical Properties of Viscoelastic Substances, Biocompatibility and Safety Requirements.- - pH-Value.- - Colloid Osmotic Pressure.- - Osmolality.- - Structural Formulas and Chemical Composition.- - Complications Through Viscoelastics.- - The Owl Monkey Eye Test.- - International Organization for Standardization.- 3 Viscoelastic Substances.- Hyaluronate.- Hydroxypropylmethylcellulose.- Chondroitin Sulfate.- Polyacrylamide.- Collagen.- Cellugel®.- 4 Product Specifications.- Manufacturers' Information About Their Viscoelastics.- Our Own Comparative Trials.- - Zero Shear Viscosity.- - Pseudoplasticity.- - Relaxation Time.- - Intersection G?/G? (Elasticity Modulus/Viscosity Modulus).- - pH-Value.- 5 General Applications of Viscoelastics.- Maintenance of the Anterior Chamber.- - Injection Techniques Into a Deep Anterior Chamber.- - Injection Techniques Into a Collapsed Anterior Chamber.- Tissue Manipulations.- - Viscomydriasis.- - Facilitating Lens Implantation.- Coatability.- Corneal Endothelial Protection.- Hemostasis.- Management of Complications.- 6 Complications Through the Use of Viscoelastics.- Therapy for Raised IOP Following Phacoemulsification.- 7 Special Uses of Viscoelastics.- Cataract Surgery.- - Routine.- - Complications and Difficult Situations.- - "Soft-Shell" Technique.- - "Best of Both Worlds" Technique.- Implantation of Foldable IOLs.- Perforating and Lamellar Keratoplasty.- Glaucoma Surgery.- Trauma Surgery.- Posterior Segment Surgery.- Surgery of Eye Muscles.- Lacrimal Dysfunction (Coating Medium).- 8 Removal of ViscoelasticSubstances.- The "Rock and Roll" Technique.- Retention of the Viscoelastic Substance.- 9 Healon®5: A New Viscoadaptive Formulation.- 10 Aseptic Production vs. Terminal Sterilization.- 11 Viscoelastics: Medical Device or Drug.- 12 Summary.- Product Overview.- - Hyaluronic Acid Products.- - HPMC-Products.- Measured Values for Certain Products Gained by Individual Investigations.- - Viscoelastics Containing Hyaluronic Acid.- - Viscoelastics from Hydroxypropylmethylcellulose.- References.