ABSTRACT
References 73
1. INTRODUCTION
The contemporary glaucoma implants are all modeled on the long tube Molteno implant
introduced in 1973 (1). The implants most commonly used are the Molteno single and
double plate devices, the Baerveldt, Ahmed, and the Krupin implants. The Ahmed and
Krupin implants are valved, whereas the Baerveldt and Molteno implants are nonvalved.
Insertion techniques for valved and nonvalved implants differ. In that, nonvalved implants
require additional techniques to be applied on insertion to prevent hypotony. The different
implants do require minimal modifications regarding their individual insertions, and these
will be described.
