Copenhagen 2016 Registration Programme Exhibitor Information Virtual Exhibition Satellite Meetings Glaucoma Day 2016 Hotel Star Alliance

10 - 14 Sept. 2016, Bella Center, Copenhagen, Denmark

This Meeting has been awarded 27 CME credits


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Trabeculectomy outcomes: do results in a district general hospital setting compare to larger centres?

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Session Details

Session Title: Presented Poster Session: Glaucoma

Session Date/Time: Sunday 11/09/2016 | 15:00-16:30

Paper Time: 15:30

Venue: Poster Village: Pod 3

First Author: : M.Dowlut UK

Co Author(s): :    A. Higham   M. Chakrabarti   J. Parker   P. Hassett     

Abstract Details


Trabeculectomy is the most widely used procedure for surgical management of glaucoma (Landers et al., 2012). We aimed to evaluate the efficacy of reducing intraocular pressure (IOP) and preserving best corrected visual acuity (BCVA) after trabeculectomy in a routine district general hospital setting, with an average of 14 trabeculectomies performed per year.


Retrospective cohort study of consecutive patients undergoing trabeculectomy by one surgeon at a district general hospital between 2009 and 2012.


These cases were identified by their surgical code, after which a case note review and pro-forma was completed to collect data. Success was defined as IOP remaining below 21mmHg post operatively or at least a 20% reduction in IOP. Failure was defined as any patient needing further filtration surgery, or if the patient was left with vision worse than 1.3 (logMAR) in the affected eye. This excluded patients with other ophthalmic causes of visual reduction. Data was analysed using Microsoft Excel, 2011.


A total of 54 trabeculectomies (in 44 patients) were performed during this period; 16 of which were combined phaco-trabeculectomies. The mean patient age was 65 years. Follow up period ranged from 17-69 months. IOPs remained under 21mmHg throughout in 39% of patients. 72.5% patients’ IOPs decreased by more than 20%. Total ‘success’ was achieved in 78% cases. There was 1 failure (2%), this patient had a redo trabeculectomy. The mean pre and final BCVA were 0.08 (SD0.22) and 0.42 (SD 0.76), respectively. The mean pre and final IOPs were 27.7mmHg (SD 10.2) and 15.6 mmHg (SD 5.1) respectively.


Within this setting of routine clinical practice, with a relatively small number of annual cases performed, a similar success and failure rate were observed when compared to a 20year follow up study by Landers et al., 2012. Our study has all the limitations of retrospective audits and case series with reliance on existing case records. Trabeculectomy remains a successful way of lowering intraocular pressure and thus preserving patients’ vision.

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