32 years based in Central Africa mostly in clinical work and teaching. Later years concentrating on primary eye care and NTDs particularly onchocerciasis. Director of Mectizan Donation Programme 2008 -2916, based at the Task Force for Global Health, Emory University, Atlanta. Since retirement from MDP continuing involvement in Eye Care and NTDs. Currently chair of the DRC onchocerciasis elimination expert committee and and member of South Sudan onchocerciasis and lymphatic filariasis committee.