Asper Biotech, in collaboration with scientific partners, has updated Congenital Stationary Night Blindness (CSNB) genetic test. The new version includes two additional genes – GRK1 and TRPM1, associated with Congenital Stationary Night Blindness. Now the CSNB microarray covers the analysis of 11 genes – RHO, PDE6B, GNAT1, CABP4, GRM6, SAG, NYX, CACNA1F, CACNA2D, GRK1, TRPM1 – and detects 159 mutations instead of 126 of the earlier version.