Thank you, I was aware of the document. In fact, I discussed it with the therapist and she said that I exceeded the minimum requirements comfortably from the initial assessment, which is the frustrating (and expensive) thing about all of this and why it pains me to wear glasses I don't need. I feel the original assessment for the Class I was botched, the lady was in a rush, wasn't explaining anything properly - couldn't even work the machine! Complete disregard to the importance their role has in someone's future.
Anyway as you say, I don't think there is an appeal process and that on balance it might be wiser from an employability perspective to accept the glasses instead of the limitation requiring ophthalmology assessment.