Lutein and zeaxanthin supplementation and association with visual function in age-related macular degeneration.

@article{Liu2014LuteinAZ,
  title={Lutein and zeaxanthin supplementation and association with visual function in age-related macular degeneration.},
  author={Rong Liu and Tian Wang and Bao Zhang and Li Qin and Chang-rui Wu and Qingshan Li and Le Ma},
  journal={Investigative ophthalmology \& visual science},
  year={2014},
  volume={56 1},
  pages={
          252-8
        }
}
PURPOSE To evaluate the effects of lutein and zeaxanthin on visual function in randomized controlled trials (RCTs) of AMD patients. METHODS Relevant studies were identified by searches on PubMed, EMBASE, Web of Science, and Cochrane Library database up to April 2014. Three investigators independently determined the eligibility of RCTs, which compared lutein and zeaxanthin intervention with placebo. The adjusted weighted mean differences (WMDs) from each study were extracted to calculate a… 

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