研究目的
To determine the prevalence of vitreomacular adhesion (VMA) in a random sample of clinical patients at three US retina clinics and to assess comorbid retinal conditions, ocular diseases, prior treatment history, and other medical histories.
研究成果
The prevalence of VMA was 14.74% in the study cohort, with factors like age and macular hole conditions predictive of VMA diagnosis, aiding in identifying patients who might benefit from treatment.
研究不足
Retrospective design may introduce bias; sample from tertiary care clinics may not represent general population; some data on race were not available; reliance on medical records and OCT scans which might have variability.
1:Experimental Design and Method Selection:
Observational, retrospective cohort study with three phases: data collection, OCT scan review, and data analysis. Used SD-OCT scans and medical records.
2:Sample Selection and Data Sources:
Random sample of patients from Doheny Eye Centers, Duke Eye Center, and Tufts Medical Center who had bilateral SD-OCT scans and available medical records, excluding those with vitrectomy history or time-domain OCT.
3:List of Experimental Equipment and Materials:
SD-OCT scanners (e.g., Cirrus 512×128 volume scan from Carl Zeiss Meditec AG, Spectralis 20°×20° cube from Heidelberg Engineering), electronic health records, OCT grading forms, ViedocTM electronic data capture system, SAS version
4:3, NCSS Experimental Procedures and Operational Workflow:
Collected retrospective patient data, reviewed OCT scans at Duke Reading Center to assess VMA and conditions, analyzed data for prevalence and correlations.
5:Data Analysis Methods:
Used SAS and NCSS for statistical analysis, including confidence intervals, t-tests, chi-square tests, with significance at P<0.05.
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