VBHB, the following may be relevant:
"To be eligible to be considered for training, applicants
must be able to satisfy the following mandatory criteria
at the time of submitting their application.
completed Year 12 with passes in English, Maths and Science [preferably Physics]; or hold a tertiary education qualification (degree or diploma in any discipline); or hold a current Commercial or Private Pilot Licence."
Also for a class 3 medical:
http://www.comlaw.gov.au/Details/F20...ume_2#param190
Visual requirements
3.30
Is not suffering from any safety‑relevant pathological condition (either acute or chronic), nor any sequelae of surgery or trauma
3.31
Has normal binocular vision