Background
His father was a Justice of the Peace and served as Mayor of Bathurst.
His father was a Justice of the Peace and served as Mayor of Bathurst.
He attended All Saints" College, Bathurst, in his early school years.
John Halliday was the youngest of eight children of Francis and Mary Halliday. In 1888, he was enrolled as Charles Halliday as a boarder at Newington College. Halliday was a member and Secretary of the College Literary and Debating Society, he served in the Cadet Corps and was a Prefect.
At the end of the year, Halliday was named Dux of the College and received the Schofield Scholarship.
He went up to the University of Sydney, reverting to the name of John Halliday, and in 1896 graduated as a Bachelor of Medicine and Chemistry. In 1898 and 1899, Halliday studied ophthalmology in England before returning to Sydney and establishing a general practice at Rockdale, New South Wales.
He commenced special practice in Macquarie Street, Sydney in 1901 and was appointed as Clinical Assistant in Ophthalmology at Royal Prince Alfred Hospital (RPA). Five years later he was promoted to Assistant Honorary Ophthalmic Surgeon and was appointed as Acting Assistant Ophthalmic Surgeon at Sydney Hospital.
Halliday travelled to Amritsar, India, to study intracapsular cataract extraction under Lieutenant
Colonel Henry Smith. Foreign eleven years from 1920 Halliday was an Honorary Ophthalmic Surgeon at RPA and then a Consulting Ophthalmic Surgeon. He was awarded a Department of Public Health from the University of Cambridge and was a Fellow of the Royal College of Surgeons of Edinburgh and a Fellow of the Royal Australasian College of Surgeons.
Halliday was a member of the Ophthalmological Society of New South Wales and was pivotal in the establishment of the Optical Prescription Spectacle Makers in 1932 and the Medical Eye Service Clinic in 1934.