Overview

It will be difficult to find an ophthalmic surgeon who will gladly do his work entirely without viscoelastics. Within just a few years this group of substances has enlarged the field of ophthalmic surgery enormously. Many procedures have be­ come safer and simpler and other techniques could only be developed because of the availability of visco elastics. Especially cataract surgery and implantation of intraocular lenses have benefitted. Implantation of an intraocular lens can be per­ formed much more reliably into the capsular bag without endangering the posterior capsule. Implantation of foldable lenses would be almost impossible without visco elastics. However, other surgical maneuvers also necessitate visco­ elastics, especially when the anterior chamber must be maintained, the corneal endothelium must be protected and delicate tissues must be manipulated. A cor­ neal transplant can be sutured safely into the recipient corneal ring using visco­ elastics. Even in glaucoma surgery, visco elastics gain importance as they are being used in trabeculectomy or in deep sclerectomy with additional viscocana­ lostomy. But which substance is best for which purpose? Just as much as a basic phar­ macological knowledge is necessary for a rational use of drugs, in-depth know­ ledge of physicochemical properties and objective investigations are prerequi­ sites for a logical selection of visco elastics from an ever increasing number of available substances. H.

Full Product Details

Author:   H.B. Dick ,  Oliver Schwenn
Publisher:   Springer-Verlag Berlin and Heidelberg GmbH & Co. KG
Imprint:   Springer-Verlag Berlin and Heidelberg GmbH & Co. K
Edition:   Softcover reprint of the original 1st ed. 2000
Dimensions:   Width: 15.50cm , Height: 0.90cm , Length: 23.50cm
Weight:   0.272kg
ISBN:  

9783642641220

ISBN 10:   3642641229
Pages:   152
Publication Date:   08 August 2012
Audience:   Professional and scholarly ,  Professional & Vocational
Format:   Paperback
Publisher's Status:   Active
Availability:   Manufactured on demand  
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Table of Contents

1 Overview.- Historical Development.- Current Breakdown of Viscoelastic Substances.- Analysis of Current Application Modes.- 2 Basics.- Physicochemical Properties of Ophthalmic Viscosurgical Devices.- Optical Properties of Viscoelastic Substances.- Chemical Properties of Viscoelastic Substances, Biocompatibility and Safety Requirements.- 3 Viscoelastic Substances.- Hyaluronate.- Hydroxypropylmethylcellulose.- Chondroitin Sulfate.- Polyacrylamide.- Collagen.- Cellugel®.- 4 Product Specifications.- Manufacturers’ Information About Their Viscoelastics.- Our Own Comparative Trials.- 5 General Applications of Viscoelastics.- Maintenance of the Anterior Chamber.- Tissue Manipulations.- 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.- 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.

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