Tim ~
This is a fairly common dilemma for post-op AN patients seeking new employment. On that basis, I appreciate your question, as well as your offer to absolve us from any negative consequences of any decision you may choose to make, which, as you correctly stated, in this matter, is your responsibility, alone.
That being duly noted, I have to agree with the previous posters; i.e. if a potential employer doesn't ask, directly, then I see no reason to divulge specific information regarding your acoustic neuroma diagnosis and subsequent surgery. However, in my experience - especially when you're applying for a responsible position - an employer's HR department may hand you a form asking for a list of any chronic illnesses or surgeries you may have had and/or simply ask you to list any impediments that might affect your ability to perform the job you're seeking. Of course there are laws preventing the potential employer from asking too much or even appearing to discriminate based on any possible physical limitations that would not affect your ability to do the job for which you're applying. That is the salient point: if your slightly impaired hearing or occasional manifestations of less-than perfect equilibrium won't impede your ability to perform your classroom duties, which seems doubtful, then I see no reason why you need to divulge this information. Of course, this is an issue of judgment. To be totally forthright about your tumor and surgery as well as mentioning your minor physical deficits related to the AN - or to simply omit that information unless asked in a very specific manner by a potential employer. As you noted, it's your call.
Because you won't need medical insurance from a potential employer, that may obviate this quandary for you. As long as you're in reasonably good health with no truly outstanding physical deficits that could affect your ability to perform the job you want, most potential employers will not attempt to explore every facet of your physical condition or seek medical information they don't need. I believe that in your situation - with only minor deficits and not requiring an employer's medical insurance - you can safely avoid discussing your AN and related issues with no fear that this will jeopardize your position if the information should surface at a later date or cause you to feel you're committing an ethical lapse in order to secure a job. Bottom line, for me: I wouldn't mention the AN stuff.
Jim