PURPOSE To investigate baseline characteristics of patients undergoing additional anti-vascular endothelial growth factor (VEGF) injections for residual or recurrent diabetic macular edema (DME) in the first year after 0.19 mg… Click to show full abstract
PURPOSE To investigate baseline characteristics of patients undergoing additional anti-vascular endothelial growth factor (VEGF) injections for residual or recurrent diabetic macular edema (DME) in the first year after 0.19 mg fluocinolone acetonide (FAc) implant. DESIGN Prospective cohort study METHODS: Ninety-four eyes of 66 patients received FAc implant. Eyes with persistent or recurrent DME were managed with pro-re-nata anti-VEGF agents. Demographic data and medical history were collected at baseline. Best-corrected visual acuity(BCVA) and central macular thickness(CMT) were measured every 2 months. Three outcomes explored:1) risk factors for administration of additional anti-VEGF agents;2) interval from FAc to first anti-VEGF injection;3) number of anti-VEGF doses required to maintain regression of DME. RESULTS Eighteen eyes(19.1%) of 13 patients received 1.3±0.6 anti-VEGF injections. These eyes had significantly thicker CMT at baseline and over entire follow-up(p<0.001); BCVA was similar at every time-point to eyes not receiving extra DME treatments. Eyes without preexistent panretinal photocoagulation(PRP) had higher risk to undergo supplemental treatments(HR:1.5;95%CI:1.1-2.5, p=0.03). The interval between FAc implant and the first anti-VEGF had significant linear positive relationship with the number of dexamethasone implant before FAc implant(p=0.002, R2=0.47).No association was found between baseline factors and the number of injections given. CONCLUSION Anti-VEGF agents are efficient treatment to maintain visual acuity in residual/recurrent DME after FAc. Patients with higher baseline CMT and with no previous PRP are more likely to require additional treatments to control DME.
               
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