Outcome of Trabeculectomy in Primary Angle-Closure Glaucoma
Duangdao Thatsnarong MD*, Chatuporn Ngamchittiampai MD*
Affiliation : * Department of Ophthalmology, Mettapracharak Hospital, Nakhon Pathom, Thailand
Objective : To study the outcome of trabeculectomy in patients with primary angle-closure glaucoma (PACG).
Material and Method: This was a retrospective study performed on data from patients with PACG underwent trabeculectomy
at Mettapracharak Hospital, Thailand between January and December 2012. The outcomes of trabeculectomy were assessed
in term of final intraocular pressure (IOP), visual acuity change, and the incidence of complications. A complete success
was defined as achieving IOP of 21 mmHg or less without medication and a qualified success was defined as IOP of 21
mmHg or less with antiglaucoma medications.
Results : Thirty-six eyes from 36 patients were reviewed. The average follow-up period was 23.5±8.8 months. The overall
success rate was 80.5%. A complete success in final IOP was found in 21 patients (58.3%), and a qualified success was
found in eight patients (22.2%). Two patients (5.5%) had lost two or more lines of Snellen acuity at the last follow-up visit
compared with their preoperative visual acuity, and 88.9% of patients had unchanged visual acuity at last follow-up. Bleb
encapsulation and increasing cataract formation (19.4% and 16.7% respectively) were the most frequent complications
found.
Conclusion : Trabeculectomy could provide a good success rate in patients with PACG. However, this procedure had risks
of visual loss and some complications.
Keywords : Primary angle-closure glaucoma, Trabeculectomy, Intraocular pressure
