4.6 Article

Pseudodrusen in the Fellow Eye of Patients with Unilateral Neovascular Age-Related Macular Degeneration: A Meta-Analysis

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PLOS ONE
卷 11, 期 2, 页码 -

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PUBLIC LIBRARY SCIENCE
DOI: 10.1371/journal.pone.0149030

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资金

  1. National Eye Institute, National Institutes of Health [R21EY023689, P30 EY01583-26]
  2. Foundation Fighting Blindness
  3. Mackall Trust Funds

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Importance The fellow eye of patients with unilateral neovascular age-related degeneration (nAMD) is at increased risk of developing late AMD. Several cohort studies have evaluated the prevalence of pseudodrusen and the association between pseudodrusen and late AMD in the fellow eye of patients with unilateral nAMD. However, these studies have limited sample sizes and their results are inconsistent. Objective To evaluate the prevalence rate of pseudodrusen, and the association between pseudodrusen and incidence of late AMD (nAMD and geographic atrophy (GA)) in the fellow eye of patients with unilateral nAMD. Data Sources The PubMed, EMBASE, Web of Science, and Cochrane Library databases were searched up to July 2015, as well as other systematic reviews. Study Selection All cohort studies for pseudodrusen with late AMD in the fellow eye of patients with unilateral nAMD. Data Extraction and Synthesis The numbers of patients with and without pseudodrusen at baseline and the numbers of incident nAMD and GA during follow up among patients with and without pseudodrusen were independently extracted by 2 authors. The results were pooled using random-effects meta-analysis. Heterogeneity was assessed using the I-2 test. Main Outcome Measures Prevalence rate of pseudodrusen, risk ratios (RRs) and their 95% confidence intervals (95% CIs) for associations between pseudodrusen and the incidence of nAMD and GA in the fellow eye. Results Five cohort studies (N = 677 patients) from 8 countries across 4 continents were included. The pooled prevalence rate of pseudodrusen in the fellow eye was 48.1% (95% CI: 36.7-59.5%, I-2 = 87%). Pseudodrusen were associated with an increased risk of nAMD (RR = 1.54, 95% CI: 1.10-2.16, I-2 = 42%), GA (RR = 4.70, 95% CI: 1.22-18.1, I-2 = 64%), and late AMD (RR = 2.03, 95% CI: 1.35-3.06, I-2 = 60%). Conclusions For patients with unilateral nAMD, pseudodrusen were present in about half of the fellow eyes. The presence of pseudodrusen was associated with a 1.5 times higher risk of developing nAMD, a 4.7 times higher risk of developing GA, and a 2 times higher risk of developing late AMD. Pseudodrusen should be considered in evaluating the risk of late AMD development; however, due to considerable heterogeneity across these studies, a larger study is needed to validate these findings.

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