Whilst applying for entry to the PMRAFNS, I had a medical at the Central Medical Estblishment in London. If you could get up the stairs you were halfway to being declared fit. Reception on the second floor, if I remember correctly. By accident I had an aircrew eye test, and later asked the Wing Commander MO what the rsult was, surprisingly he told me I had passed, but that I would never be acceoted for aircrew as my vision would deteriorate during the period of training to below minimum standards. Surprise surprise, it did.
Standards are there for a reason, no good having an asthma attack when flying, working on a flight line or when out with a Regiment patrol, even sat in a mission critical desk post.
Regards.
Air pig.