New glaucoma drainage implants available to glaucoma surgeons

Purpose of reviewGlaucoma drainage device (GDD) implantation surgery is commonly performed by glaucoma specialists to treat complex and refractory glaucomas. Relative safety and efficacy data from randomized controlled trials conducted in the last two decades have sparked the interest in GDDs as possible surgical options earlier in the course of the disease than has traditionally been practiced. However, until recently, advances in the design and techniques of GDD surgery have fallen short of this increasing interest.Recent findingsMost recently, new GDDs that possess novel design features have become available to glaucoma specialists. Two of these new devices are the Ahmed ClearPath and the Paul glaucoma implant. These devices have demonstrated promising outcomes that are comparable to those of traditional implants. Additionally, given their unique respective features, these devices may streamline surgical technique due to ease of insertion and afford better safety and efficacy outcomes in certain patients.The recent introduction of new GDDs has been long awaited by glaucoma surgeons. Although early results are promising, long-term data and comparison of outcomes to those of traditional filtering surgery and commonly implanted devices are needed before these devices can be the new standard of care in glaucoma tube shunt surgery.