Yes, total allowable correction in -6D (taking into account any astigmatism). This means that you add the values for your myopia (SPH) and astigmatism (CYL) to get your total correction, if this is more than 6, you're going to have trouble. It is my understanding that current, and enforced deviations (i.e given before December 1st) are for people between 5 and 6 dioptres of myopia or 2-3D astigmatism. I dont think itd be possible to give a class 1 to a person with -9D of correction...