CALCA and keratoconus: Although Inx5 and Inx6 are reportedly required in the α/β and α′/β′ KC classes for visual learning and memory (Liu et al. 2016a), we do not detect either gene in any of the 7 MB KC subtypes (0 – 0.2 TPM, 0 – 0.5 TPM, respectively; Figure 5E).