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Year : 2017  |  Volume : 18  |  Issue : 3  |  Page : 154-159

Efficacy of intravitreal triamcinolone acetonide with thermal combination therapy versus intravitreal triamcinolone acetonide monotherapy on diffuse diabetic macular edema

Department of Ophthalmology, Faculty of Medicine, Al-Azhar University, Assiut, Egypt

Correspondence Address:
Ashraf M Gad Elkareem
Department of Ophthalmology, Al-Azhar University Hospital, Assiut, 71524
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Source of Support: None, Conflict of Interest: None

DOI: 10.4103/DJO.DJO_22_17

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Purpose The aim of this study was to compare the efficacy of intravitreal triamcinolone acetonide (IVTA) monotherapy with IVTA plus macular grid laser photocoagulation combination therapy on the treatment of diffuse diabetic macular edema. Patients and methods Fifty eyes of 38 patients exhibiting diffuse diabetic macular edema were evaluated in this prospective comparative study. The patients were divided into two groups: IVTA monotherapy group and combination therapy group (IVTA plus grid laser). The main outcome measures of the study were best-corrected visual acuity (VA) scored in logMAR and the central macular thickness (CMT) as estimated at 3 and 6 months after treatment. The study further assessed the potential complications associated with IVTA injection. Results The baseline logMAR VA and CMT were 0.46±0.22 and 445.2±123.91 µm for the IVTA monotherapy group and 0.57±0.27 and 456.91 ±134.32 µm for the combination therapy group, respectively. The post-treatment logMAR VA at 3 and 6 months were 0.24±0.12 and 0.28±0.09 for the IVTA monotherapy group and 0.22±0.13 and 0.18±0.16 for the combination therapy group, respectively. The CMT values at 3 and 6 months were 305.5±115.30 and 310.8±86.8 µm for the IVTA monotherapy group and 280.9±43.9 and 254.2±45.95 for the combination therapy group. Improvement in VA and CMT after treatment was statistically significant in both groups. Approximately 10% of patients developed cataract after 5 months of intravitreal injection. The mean pretreatment intraocular pressure and the mean post-treatment intraocular pressure were 15.49±2.47 and 14.56±2.26 and 14.92±2.80 and 13.55±2.02 mmHg in both the IVTA monotherapy and combination therapy groups, respectively. Conclusion Macular grid laser photocoagulation after IVTA effectively maintains the VA and macular thickness of the patients included in this study during the first 6 months of treatment.

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