Hi- I want to join up as a clearance diver and I have heard that there is a strick medical for this branch on top of the joining medical. Can anyone tell me what this involves, and if mnay applicants get turned down at this stage? Also, I am short-sighted and sometimes wear glasses...but I have been told that my eyesight is good enough for the RN; are MCD eyesight requirements any stricter? Apparently I am only 'mildly' short-sighted. Thanks!