Nathan graduated with a Bachelor of Optometry with Honours and the University Medal at UNSW and later returned to complete his Graduate Certificate in Ocular Therapeutics. He has spent the majority of his career working in private practice in Sydney. He joined the UNSW Optometry Clinic in 2010 as a clinical supervisor overseeing undergraduate eye examinations. He has consulted at the Aboriginal Medical Service (Redfern) and more recently at the Diabetes Centre (Prince of Wales Hospital). He has an interest in management of ocular disease and colour vision.