marine drugs Article Protective Effect of Astaxanthin on Blue Light Light-Emitting Diode-Induced Retinal Cell Damage via Free Radical Scavenging and Activation of PI3K/Akt/Nrf2 Pathway in 661W Cell Model Chao-Wen Lin 1,2, Chung-May Yang 1,3 and Chang-Hao Yang 1,3,* 1 Department of ...