I am 41 and interested in joining thr Royal Navy Reserve but I have a mild cataract in one eye, still meeting visual standard 3 though. Does anybody know if it will constitute a straight fail at medical?
Section 4, ANNEX A is what you need to look at. Obviously this is just my interpretation and you would need to talk to a qualified service medical officer to get a definitive answer but can use this text for guidance.
Again, not medically qualified to give definitive medical advice but in my experience a cataract will probably be a significant issue with regard medical suitability for service however it maybe worth getting as far as the medical to find out under what circumstances in future you could meet the medical standard for entry.