Jeremy Tan1,2, Nicholas Chow1, Mitchell Lawlor1,2

Purpose: To describe a single surgeon series of clin- ical outcomes of Baerveldt glaucoma tubes using a new ab-interno approach to placing the tube in the ciliary sulcus
Method: Retrospective interventional consecutive case series of Baerveldt tube implantation with a minimum of twelve months follow up. Data was collected via a web-based glaucoma registry. Main outcome measures were control of intraocular pres- sure, number of glaucoma medications, visual acu- ity, and surgical complications.
Results: Eleven eyes of ten patients were included in the study. Eight patients were male and mean age was 61.1 years. Mean follow up was 17.7
5.3 months. Mean intraocular pressure decreased from 22.7 5.6 mmHg at baseline to 11.3
4.1 mmHg at final follow up. Mean number of glau- coma medications decreased from 3.9 0.8 to 1.2
1.6. 91% of patients achieved success defined by IOP < 18 mmHg and >30% reduction from baseline, with 55% achieving unqualified success (no topical medications) and 36% qualified success (with topi- cal medications). Mean visual acuity at baseline and final follow up was not significantly different; 64.8 and 58.6 LogMAR score (P = 0.26). Major surgical adverse events occurred in two patients – one with an intraocular lens dislocation, and one with malig- nant glaucoma. Only the former was directly attrib- utable to the ab-interno procedure, but both patients had good acuity and IOP control by final follow up. Conclusion: Ab-interno placement of Baerveldt glaucoma tubes in the ciliary sulcus is effective in lowering both intraocular pressure and number of glaucoma medications in the medium term.