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Intravitreal triamcinolone acetonide as primary treatment for diffuse diabetic macular edema: a prospective noncomparative interventional case series
Authors:Nicolò M  Nasciuti F  Lai S  Ghiglione D  Borgia L  Calabria G
Institution:Dipartimento di Neurologia, Oftalmologia e Genetica (Di.N.O.G.), Sezione di Clinica Oculistica, Università di Genova, Italy. massimonicolo@occhioallaretina.it
Abstract:PURPOSE: To evaluate the efficacy and safety of one intravitreal injection of 25 mg of triamcinolone acetonide as primary treatment for diffuse diabetic macular edema. METHODS: Intravitreal triamcinolone acetonide injection was performed in 30 eyes with previously untreated diabetic macular edema. The main outcome measures were logMAR visual acuity (VA) and central macular thickness (CMT) at 1, 3, and 6 months. A secondary outcome was intraocular pressure progression. RESULTS: Visual acuity results for 30 eyes that had a follow-up of at least 6 months are presented. Twenty of them were followed up to 10.1+/-2.38 months. Preoperatively, VA was 0.54+/-0.27. At 1, 3, and 6 months follow-up, VA was 0.44+/-0.29 (p=0.001), 0.43+/-0.28 (p=0.001), and 0.45+/-0.29 (p=0.006), respectively. Preoperatively, CMT was 417.3+/-143.5 microm. At 1, 3, and 6 months follow-up, CMT was 277.3 +74.0 microm (p<0.0001), 279.6+/-94.4 microm (p<0.0001), and 297.07+/-114.87 microm (p=0.002), respectively. For the 20 eyes with a follow-up of 10.1+/-2.38 months, VA was 0.5+/-0.25 and 0.50+/-0.32 at baseline and at the last follow-up visit, respectively (p>0.05). Preoperatively, intraocular pressure (IOP) was 15.13+/-1.48 mmHg. IOP was 18.26+/-2.71 mmHg, 20.07+/-4.27 mmHg, and 20.4+/-6.18 mmHg, at 1, 3, and 6 months, respectively (p<0.0001). Four eyes underwent uncomplicated filtrating surgery for intractable glaucoma. CONCLUSIONS: Intravitreal triamcinolone as primary treatment effectively increases VA and reduces CMT due to diffuse diabetic macular edema. Longer follow-up and randomized clinical trial are warranted. Safety results highlight the need to further study the relationship between triamcinolone and intraocular pressure.
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