Materials used in contemporary glaucoma drainage devices (GDDs)4
| GDDs | Year of introduction | Tube material | Plate material |
|---|---|---|---|
| Molteno | 1979 | Silicone | Polypropylene |
| Baerveldt | 1990 | Silicone | Silicone |
| Krupin with disc | 1990 | Silicone | Silicone |
| Ahmed | 1993 | Silicone | Polypropylene with silicone valve |
| Optimed Model-1014 | 1995 | Silicone | Silicone with PMMA matrix |
| Helies | 1997 | N/A | PTFE |









