OPN4 and retinal degeneration: Lin Lin B B Koizumi Koizumi A A Tanaka Tanaka N N Restoration of visual function in retinal degeneration mice by ectopic expression of melanopsin Restoration of visual function in retinal degeneration mice by ectopic expression of melanopsin Proc Natl Acad Sci USA Proc Natl Acad Sci USA 2008 2008 105 105 16009 16009 16014 16014 10.1073/pnas.0806114105 10.1073/pnas.0806114105 18836071 18836071