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Comparison of clinical outcomes between one and three monthly initial anti-VEGF therapy for diabetic macular edema Daiki Kuraoka 1 , Tetsuo Ueda 1 , Daishi Wada 1 , Yuutaro Mizusawa 1 , Nahoko Ogata 1 1Department of Ophthalmology, Nara Medical University pp.1445-1450
Published Date 2022/10/15
DOI https://doi.org/10.11477/mf.1410214537

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Abstract Purpose:The frequency of initial anti-VEGF therapy for diabetic macular edema(DME)is not consistent. This study aimed to compare the clinical outcomes by the frequency of initial therapy.

Cases and Methods:Forty-six eyes of 46 patients diagnosed with DME at Nara Medical University Hospital were included. They underwent initial therapy from March 2013 to January 2018 and were followed up for two years or longer. Twenty eyes received a 1+PRN regimen(1+PRN group), and 26 eyes a 3+PRN regimen(3+PRN group). The best-corrected visual acuity(BCVA)and central macular thickness(CMT)were measured at baseline and at 12, 24 months after the first therapy.

Results:There was no significant difference in the mean age between the groups. At baseline, the BCVA of the 1+PRN and 3+PRN groups were 0.46±0.32 and 0.44±0.27, respectively(p=0.81). CMT of the 1+PRN and 3+PRN groups at baseline were 411.03±140.39 μm and 491.50±113.34 μm, respectively(p=0.023). The BCVA of 1+PRN group at 12 months and 24 months after the first therapy was 0.48±0.29 and 0.47±0.27, respectively and that of the 3+PRN group was 0.35±0.34 and 0.31±0.26, respectively. Although we found no significant difference in the BCVA, that of the 3+PRN group at 24 months after the first therapy was relatively better than the 1+PRN group(p=0.06). The CMT of the 1+PRN group at 12 months and 24 months after the first therapy was 421.23±185.56 μm and 403.58±149.79 μm, respectively, and that of the 3+PRN group was 441.58±142.89 μm and 371.20±89.37 μm, respectively. Although there was no significant difference between the two groups, that of the 3+PRN group significantly decreased in twenty-four months(p=0.001).

Conclusion:3+PRN was a more effective regimen for the treatment of DME.


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