A mate of mine went to OASC and saw the Doc there, he was in the same situation as yourself - passed the tests but told his eyesight was naff. He duly picked up the 'phone and rang Wallop to see if it was worth travelling down to sit the rest of the tests and was told not to worry about what the RAF said and that they would make the decision on his eyesight.
He went on to be accepted and selected for grading and subsequently loaded on a course!