No abstract

NPDS is an effective alternative filtration surgery. Preoperative IOP, postoperative IOP, pre and postoperative medications and intra and postoperative interventions are amongst the indicators of success or failure of NPDS This was a single arm retrospective study undertaken at Alexandria university in Egypt. Patients with open angle glaucoma who underwent NPDS with a minimum of 2year period of follow up were selected and the following variables were tested with a success criteria IOP of 12mmhg; age, preoperative and postoperative intraocular pressure (IOP), preoperative and postoperative number of medication, lens status (phakic or aphakic), history of other surgeries, intraoperative and postoperative complications, intraoperative and postoperative interventions and other glaucoma surgeries.