Efficacy of Ethanol Extract of<i>Fructus lycii</i>and Its Constituents Lutein/Zeaxanthin in Protecting Retinal Pigment Epithelium Cells against Oxidative Stress:<i>In Vivo</i>and<i>In Vitro</i>Models of Age-Related Macular DegenerationXin-Rong Xu, Wei Li|Journal of Ophthalmology|2013Cited by 30