研究目的
To evaluate age-related differences in the prevalence of subtypes of neovascular age-related macular degeneration in the first diagnosed eye.
研究成果
The prevalence of subtypes of neovascular AMD varies significantly with age, with PCV more common in younger patients and type 3 neovascularization in older patients, suggesting different underlying pathophysiologies. This has implications for diagnostic and treatment strategies.
研究不足
The study was retrospective and based on data from a single institution with a small sample size. Selection bias may exist as only patients who underwent ICGA were included. Lack of systemic/lifestyle factor data (e.g., smoking, BMI) and the focus on Korean patients limit generalizability to other populations.
1:Experimental Design and Method Selection:
A retrospective, observational study design was used. Patients were classified into three subtypes of neovascular AMD based on imaging criteria, and grouped by age. Statistical analysis included chi-square tests and one-way ANOVA with Tukey's test.
2:Sample Selection and Data Sources:
Medical records of patients aged >50 years newly diagnosed with neovascular AMD between January 2013 and July 2016 at Kim's Eye Hospital, South Korea, were reviewed. Inclusion required available indocyanine green angiography results; exclusion criteria included severe media opacity, high myopia, end-stage disease, and other retinal conditions.
3:List of Experimental Equipment and Materials:
Equipment included Spectralis HRA + OCT? (Heidelberg Engineering GmbH) and RS 3000? (Nidek Co., Ltd.) for optical coherence tomography and angiography imaging.
4:Experimental Procedures and Operational Workflow:
Patients underwent comprehensive ophthalmological examinations, including best-corrected visual acuity measurement and slit lamp biomicroscopy. Fundus photographs, fluorescein angiography, and indocyanine green angiography images were captured and analyzed by two independent examiners to classify AMD subtypes.
5:Data Analysis Methods:
Statistical analyses were performed using SPSS for Windows, Version 12.0. Prevalence differences among age groups were assessed with chi-square tests, and age differences among subtypes with one-way ANOVA and Tukey's test.
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