Role of posterior sub-tenon triamcinolone acetonide in patients of refractory macular oedema

Objective: To evaluate the results of posterior sub-tenon triamcinolone acetonide in patients of refractory macular oedema suffering with retinal vascular disorders. Methods: This quasi-experimental study was conducted at Layton Rahmatulla Benevolent Trust, Lahore, Pakistan, from October 2014 to March 2015, and comprised eyes of patients with refractory macular oedema. The central macular thickness of all patients was determined with ocular coherence tomography before giving injection of 40mg/ml posterior sub-tenon triamcinolone acetonide. After the injection, central macular thickness of each eye was measured in follow-ups at 1st week, 1st month and 2nd month with ocular coherence tomography. Results: Of the 40 participants, 26(65%) were men and 14(35%) women. The mean age was 61.80 +/- 7.20 years. The mean central macular thickness before injection was 488.70 +/- 34.93, while it was 337.60 +/- 146 after 1st week of injection, 420.60 +/- 76.13 after 1st month and 477.98 +/- 72.30 after two months. Comparisons of central macular thickness at various follow-ups showed a significant difference from the baseline to the last follow-up (p < 0.001). Moreover, 4(14%) subjects showed consistent improvement in central macular thickness. Conclusion: Posterior sub-tenon triamcinolone acetonide can be considered a short-termtreatment option in cases of refractory macular oedema.