研究目的
To analyze the differences in the prevalence of outer retinal tubulation (ORT) in neovascular age-related macular degeneration (AMD) treated with anti-vascular endothelial growth factor (anti-VEGF) agents, either aflibercept or ranibizumab, and to examine the changes in the frequency of injections of ranibizumab before and after ORT appearance.
研究成果
The development of ORT could be a potential biomarker for the treatment prognosis in patients with wet AMD. Its clinical significance lies also in its similarity to activity-related intraretinal fluid. Further studies are needed to explore the nature and development of ORTs employing a comparable dosing and follow-up regimen of all three currently available anti-VEGF drugs ranibizumab, bevacizumab and aflibercept.
研究不足
The relatively small sample size in the aflibercept group compared to the ranibizumab group, along with the bimonthly follow-up in the aflibercept group. The decreasing number of eyes during the follow-up could also bias the analysis by including patients with increasing disease severity.
1:Experimental Design and Method Selection:
The study was a retrospective analysis of treatment-na?ve exudative AMD patients treated with either ranibizumab or aflibercept. Optical coherence tomography (OCT) was used to document the first appearance of ORT and to evaluate its presence at fixed time points.
2:Sample Selection and Data Sources:
236 eyes of 230 patients were included, with 184 eyes treated with ranibizumab and 52 eyes with aflibercept. Patients were followed for 6–24 months.
3:List of Experimental Equipment and Materials:
Heidelberg Spectralis SD-OCT (Heidelberg Engineering, Heidelberg, Germany) was used for imaging.
4:Experimental Procedures and Operational Workflow:
Patients were treated with either ranibizumab by a pro re nata regimen or aflibercept bimonthly. OCT imaging was performed at baseline and at fixed intervals to assess ORT presence.
5:Data Analysis Methods:
Statistical analysis included survival analysis with Cox proportional hazard model, Mann-Whitney U-test for comparing injection rates, and Chi-square test for assessing the correlation between SHRM presence and ORT development.
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