Hercules pilots can, and do, wear glasses. The problem is that if you need glasses at an early age, chances are that your eyes will deteriorate further with the advancing years. And you cannot decide which bits of the regulations you consider silly or irrelevant. I would hazard a guess that you're probably not qualified to make those assessments. RAF is looking for stable, extroverts who understand the concept of military discipline. It does not need officers who think they can pick and choose the regulations that suits them.