piikki:Do you give money/downpayment back if that happens?
This is not quite what OP was asking but I remember on my OW course that we returned the medical forms first lesson. One student had ticked something that required clearance (and obviously didn't have that clearance). I was kind of thinking what a stupid way for a shop to let students do it that way. Everyone had paid up, and now someone might not even be allowed to take the course. Why not require all this in advance.
Shops will not care that you will have to go back to your doctor. I have heard several divers say their instructors advised them to tick "no" for everything. I wonder how that would fare if something happened and trail leads to undisclosed condition. Which idiot would be more wrong, the instructor for saying "don't tell" or you trying to say you didn't understand it was not wise?? Just remember you will definitely be the one in risk of losing more if you are not in a position to tell helpers something really important when you need specific kind of aid.
When a student enrolls in a course at our shop, they pay the entire tuition cost for the class up front. If they are unable to START their course b/c their physician deems them unfit to dive, then we will issue a refund for their course and any unused equipment they may have purchased.
If a prospective student thinks they may have a condition which might prevent them from diving, we encourage them to take a medical form and get a approval from their doctor before they enroll in a class. That way, they know in advance whether they will be approved to dive.
It is very rare instance in our shop where a physician will not approve a student to dive. We are firm believers that scuba training should start the moment that a person shows interest in the sport. We try to get them signed up for a course and get the student materials to them right away so they can start learning. Anything that slows down that process is a potential for that person to walk away from diving and not participate. We think this is a bad thing.