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Chapter-27 Glaucoma Implants

BOOK TITLE: Surgical Techniques in Ophthalmology: Glaucoma Surgery

Author
1. Carassa Roberto G
ISBN
9788184489583
DOI
10.5005/jp/books/11383_27
Edition
1/e
Publishing Year
2010
Pages
4
Author Affiliations
1. University Hospital, S. Raffaele via Olgettina 60, 20132 Milano, Italy, University Hospital , S Raffaele Via Olgettina 60, 20132 Milano, Italy, University Hospital, S Raffaele via Olgettina, Milano, Italy, Italian Glaucoma Centre, Piazza Repubblica 30, 20124 Milano, Italy
Chapter keywords
glaucoma implants, filtering surgery, trabeculectomy, deep sclerectomy, glaucomatous eyes, drainage implants, fibrovascular capsule

Abstract

This chapter provides an overview of glaucoma implants. The success rate of conventional filtering surgery, such as trabeculectomy or deep sclerectomy, depends on the scarring response of the eye. The use of antimetabolites significantly increases the favorable outcome of the procedures in most glaucomatous eyes. However, some specific types of glaucoma still have a very poor response to conventional surgery. Aqueous drainage implants are introduced in attempt to enhance the success rate of filtration surgery in eyes with poor surgical prognosis. The most commonly used drainage implants consist of a silicone tube that connects to the upper surface of an acrylic or silicon plate, which acts as a collecting reservoir. The plate promotes the formation of a fibrovascular capsule which encapsulates the plate itself and is filled with aqueous drained from the anterior chamber through the silicon tube. Drainage implants can be divided into two groups, valved and non-valved, based on their resistance to aqueous outflow. Surgical technique for Baerveldt implant is explained.

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