GNB3 and congenital stationary night blindness 1H: Homozygous and compound heterozygous GNB3 (MIM 139130) disease-causing variants were described in three individuals of a large Lebanese–Armenian family affected by Congenital Stationary Night Blindness type 1H (CSNB1H, MIM#617024) [8] and in a fourth sporadic case [69].