Relationship between glaucoma drainage device size and intraocular pressure control: Does size matter?

Abstract

There is ambiguity in the literature regarding whether a larger glaucoma drainage device (GDD) achieves a lower long-term intraocular pressure (IOP). There is some evidence on both sides, but overall there seems to be an optimal surface area of approximately 200–250 mm2 beyond which there may be little advantage to increasing the plate size for most patients.