期刊
ACTA DIABETOLOGICA
卷 56, 期 12, 页码 1341-1350出版社
SPRINGER-VERLAG ITALIA SRL
DOI: 10.1007/s00592-019-01416-4
关键词
Refractory diabetic macular edema; Anti-VEGF therapy; Dexamethasone implant; Intravitreal therapy; Long-term outcome
AimsTo provide 2-year follow-up data on eyes with diabetic macular edema (DME) that were non-responsive after three initial anti-vascular endothelial growth factor (VEGF) injections, comparing functional and anatomical outcomes under continued anti-VEGF therapy versus dexamethasone (DEX) implant. Methods Multicenter, retrospective chart review comparing eyes with treatment-naive DME and a suboptimal response to a loading phase of anti-VEGF therapy (3 injections given monthly) which were then treated with (a) further anti-VEGF (n=72) or (b) initially switched to DEX implant (n=38). Main outcome measures were change in visual acuity (VA) and central subfield thickness (CST) from the end of the loading phase to 24 months. Results In 79% of the 12-month study population (87/110 eyes), 24-month data were available. One quarter of eyes in each group switched treatments during the second year. Eyes that were switched early to DEX implant maintained the functional and anatomical improvements at 24 months which were seen in the first year (from month 3: +8.9 letters, -214 mu m). Eyes that were switched from anti-VEGF therapy to steroids in the second year improved VA and reduced CST at 24 months (from month 12: +6.8 letters, p=0.023; -226 mu m, p=0.004). In eyes continued on anti-VEGF therapy, VA and CST were stable at 24 months (from month 3: +2.8 letters, p=0.254; -24 mu m, p=0.243). Eyes that were non-responsive to anti-VEGF therapy for 12 months had similar chances to experience a VA gain from further therapy as eyes that were non-responsive for 3 months only (23.8 vs. 31.0%, p=0.344). Conclusions The beneficial effect of an early switch to DEX implant in DME non-responders seen at month 12 was maintained during the second year. A later switch from anti-VEGF to steroids still provided significant improvement. Eyes continued on anti-VEGF over a period of 24 months maintained vision. A quarter of eyes, which had not improved vision at 12 months, exhibited a delayed response to treatment.
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