In most of these cases the DVLA send you a letter saying you can drive as normal BUT you must attend one of their own places to get checked out for FREE at a date and time they specify
I have no idea why this has not happened in your case …
To check the pressure in the eyes the only true accurate way is to go to a specialist to have the yukky yellow drops in them and then the specialist gets a true reading - the puff of air way is not that accurate if that is what you had done