R U LISTENING ??? 
I'm not a doctor, but an engineer that has spent 10 years + working with jet engine noise, and working in dark engine bays for hours on end straining to see what your doing, just so some jock can claim his flying pay. The tests are there for your own benifit. If theres something wrong then they might be able to help, if not then you can claim compensation for what ever the injuries are. Crown immunity is long gone, and the military is responsible for your health along with yourself. If there is a problem with your hearing or eye sight, or anything else that effects your working ability, i would not like to be the one that gets injured due to your shortcomings and cheating of tests. At the end of the day your only cheating yourself. Be brave and see the doctor and mummy might take you to the sweet shop after !!