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:: Volume 23, Issue 2 (Winter 2018) ::
3 2018, 23(2): 81-85 Back to browse issues page
Site of Trabeculectomy Failure: A Surgical Revision of Failed Trabeculectomy
Y. Eslami , M. Sharifzadeh Kermani , M. Mohammadi , L. Ghojazadeh
Abstract:   (68 Views)
Purpose: To investigate the site of trabeculectomy failure with surgical revision in patients with failed trabeculectomy.
Methods: This interventional case series was performed on 47 eyes of 47 patients with surgical revision due to failed trabeculectomy Farabi Hospital between 2011 and 2015. The surgery involved fornix based peritomy MMC 2%; then, it was applied for 1 minute and subconjunctival tissues, Tenon’s capsule, and scar tissues were excised. If aqueous flow was established, the subconjunctiva and tenon would be considered as the site of failure. If not established, the scar on the episclera was released, and if drainage was established, the site of the failure at the epicardial surface would be considered. Otherwise, the scleral flap raised and releasing adhesions continued until drainage was established. Eventually, if there was no drainage, the location of the sclerotomy was examined and opened until the flow was established. The site of trabeculectomy failure was classified in 4 levels, including conjunctiva and tenon, episclera, sclera, and slerostomy site. Based on which stage of the operation the aqueous flow was established, the site of failed trabeculectomy was identified.
Results: The mean age of the patients was 44 ± 19.1 years (range 5-79 years). The site of failure in 26 (55.3%) cases was sclera, in 16 (34.1%) cases was episclera, in 4 (8.5%) cases was conjunctiva and tenon, 1 (2.1%) case was sclerostomy site. The mean interval between the trabeculectomy and surgical revision was 27.5 ± 5.32 months.
Conclusion: In this study, the most common site of trabeculectomy failure was sclera. Aqueous outflow resistance could occur in any levels by scar formation; so, prompt attention to the site of failure and well management could be effective in outcome.
Keywords: Outflow Resistance, Surgical Revision, Trabeculectomy Failure
Full-Text [PDF 295 kb]   (24 Downloads)    
Type of Study: Research | Subject: Ophthalmology
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Eslami Y, Sharifzadeh Kermani M, Mohammadi M, Ghojazadeh L. Site of Trabeculectomy Failure: A Surgical Revision of Failed Trabeculectomy . 3. 2018; 23 (2) :81-85
URL: http://binajournal.org/article-1-930-en.html


Volume 23, Issue 2 (Winter 2018) Back to browse issues page
مجله چشم‌پزشکی بینا Bina Journal of Ophthalmology
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