Purpose: To assess the efficacy of intravitreal use of triamcinolone acetonide combined with laser photocoagulation for the treatment of diffuse diabetic macular edema and to compare it with the separate use of each treatment.
Methods: After systemic clinical control, thirty patients with diffuse diabetic macular edema were divided into 3 treatment groups: (1) macular grid photocoagulation; (2) intravitreal injection of 4 mg of triamcinolone acetonide; (3) combination of the two previous therapies. Follow-up was scheduled at predetermined intervals of one day, one week and monthly until completion of six months. The following parameters were analyzed: LogMAR best corrected visual acuity, central macular thickness, total macular volume and intraocular pressure.
Results: Grid photocoagulation did not significantly reduce the central macular thickness or the total macular volume. On the other hand, this reduction was statistically significant in the other two groups. All groups improved their mean visual acuity, however, the group that received both treatments had a higher percentage of patients that gained 10 or more letters.
Conclusion: The simultaneous administration of grid photocoagulation with intravitreal triamcinolone can be considered an option for the treatment of diffuse diabetic macular edema.
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