This study will investigate if switching patients who appear to be sub-optimal responders to the current standard of care treatment with Aflibercept 2mg to Aflibercept 8mg will prolong treatment intervals and maintain visual acuity.
Aflibercept 8 mg was recently approved by the European Medicines Agency (EMA) for the treatment of neovascular age-related macular degeneration (nAMD). The higher dosage promises prolongation of treatment intervals up to 16 weeks. Only limited clinical data is available on switching from so-called suboptimal or non-responders. A retrospective analysis showed that aflibercept in 3 mg or 4 mg doses can improve outcomes in patients who do not respond optimally to aflibercept 2 mg. It remains unclear whether switching to the above-mentioned and newly approved aflibercept 8 mg will prolong treatment intervals and stabilize visual acuity in patients who are not treatment-naive. The present study is a single-center observational study. The plan is to include 50 eyes from 50 patients who have previously received aflibercept 2 mg injections. Patients receive a routine 8 mg aflibercept injection in the eye clinic based on the existing treat-extend regimen. At each visit, a visual acuity test, optical coherence tomography (OCT) imaging, and a standard slit lamp examination with fundoscopy are performed. The injection interval is extended by two weeks. If the two-week extension leads to deterioration, the interval is shortened by two weeks. Patients are monitored in the study for 12 months.
Study Type
OBSERVATIONAL
Enrollment
50
Intravitreal injection with high dose (8 mg) aflibercept
Vienna Institute for Research in Ocular Surgery
Vienna, Austria
Number of intravitreal injections
Total number of intravitreal injections will be assessed over 12 months
Time frame: 12 months
corrected distance visual acuity (CDVA)
CDVA will be determined using ETDRS-charts in a distance of 4 metres and differences will be compared over a timeframe of up to 12 months
Time frame: 12 months
Central retinal thickness (CRT)
CRT will be assessed using optical coherence tomography (OCT) and will be compared up to 12 months
Time frame: 12 months
Intraretinal fluid (IRF)
IRF will be assessed using optical coherence tomography (OCT) and compared during a timeframe up to 12 months
Time frame: 12 months
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