The FDA has approved the following aqueous shunt devices: Ahmed glaucoma valve implant(New world Medical Inc.), Molteno implant (Molteno Ophthalmic Ltd.), Baerveldt glaucoma implant (Abbott ...

and previous glaucoma surgeries were collected for each patient preoperatively. The desired quadrant, type of patch graft, and tube position of the surgery were also noted. Follow-up visits were ...