Right, just wondering how much of an issue this would be. I have "congenital fourth nerve palsy". Long story short, when I look to the upper left I see double. Eyesight is 20/20 in both eyes, and biocular vision is fine. I'm assuming this would bar me from entry to the armed forces completely yes? If I had surgery to fix it and was 6 months clear should it all be okay then with regards to passing the medical? Also, if it matters, doctor's seem not to be able to see this. Was with my GP this morning and was asking about surgery for this and when I tried to show the deviation they couldn't notice it at all... The only thing that actually picks it up is the four point test thing and another one where you point a stick at dots with an eye closed... Thanks for the advice!