While mutations in the TYR, OCA2, TYRP1, MATP (SLC45A2), SLC24A5, or C10ORF11 can cause OCA type 1, OCA type 2, OCA type 3, OCA type 4, OCA type 6, and OCA type 7, respectively (Kamaraj et al., 2014), which are identified as nonsyndromic OCA. Here, OCA2 is linked to oculocutaneous albinism.