Nitin is a Clinical Professor at the School of Medicine, University of Tasmania and Sydney and has a special interest in international health, macular disease, and teleophthalmology and has contributed to the development of undergraduate and postgraduate education at the Universities of Sydney, Timor Leste, and Papua New Guinea. He was a, Vice President, and President of RANZCO.

He currently chairs the Vision 2030 and Beyond and the Global Health Committee of RANZCO; is a director of Vision 2020 and a member of the International Engagement Committee of RACS. In 2000, he initiated the East Timor Eye Program, to establish a self-sufficient national eye care program for the people of Timor Leste. Twenty-five years later, the is run by the Timorese government and, in the last decade, the prevalence of blindness in Timor Leste has decreased from 7.7% to2.9. Nitin is a founding member of the St John Ophthalmic Association, the global arm of St John Eye Hospital in Jerusalem. served as Hospitaller and was recently invested as a Knight of the Order of St John. In recognition of his service, Nitin has been awarded: The Order of Australia; The Order Timor Leste; The RANZCO Distinguished Service Award and College Medal; The APAO Distinguished Service Award and Meritorious Service Award for the Prevention of Blindness; Companion of the RACS and The Pride of Australia Role Model Award. He was Hobart Citizen of the Year in 2013.