It is important to note that some of our positional candidates—Eif5, Bag5, Klc1, and Ppp1r13b—have been previously demonstrated to play a role in glaucoma and/or RGC health (Elluru et al., 1995; Butowt and Von Bartheld, 2007; Guo et al., 2011; Rogers et al., 2012; Wilson et al., 2013; Wang et al., 2014). This evidence concerns the gene PPP1R13B and glaucoma.