Our Research Team

Niranjani Nagarajan, MD

Postdoctoral Research Fellow

Niranjani is an ophthalmologist and a public health researcher, whose main focus is on addressing systemic factors affecting global eye health. At present, she is working on a project titled "Longitudinal Study of Health and Ageing in Kenya", which is a part of the Health and Retirement Study (HRS). Her primary role is to harmonize this study with other HRS studies. During her free time, Niranjani loves to travel and explore new places and local cuisines.

E-Mail: nniranja@med.umich.edu

Grace Chung, PhD

Postdoctoral Research Fellow

Grace is a public health researcher and decision scientist. Her research interests focus on assessing the burden of visual impairment in older adults and their caregivers as well as elucidating the pathways by which visual impairment may lead to cognitive decline. She is also interested in conducting economic evaluations of eye care delivery models to improve access to eye care in rural areas. In her free time, she enjoys playing the violin, skiing, and traveling.

E-Mail: sygrace@med.umich.edu

James Green, MHA

Research Administrator, Lead

James has a master’s degree in health administration and is pursuing a PhD in health services research with particular attention to community health. His research interests include vision screening, disease prevention, and the burdens of undiagnosed and undertreated eye disease. His primary role is in the financial administration of the Kellogg Clinical Research Center and the expansion of investigator initiated clinical research. He is working with Dr. Ehrlich and the SENSE Network to create a sensory aging meta-databank.

E-Mail: greenjw@med.umich.edu

Olivia Killeen, MD


National Clinician Scholar, Research Fellow


Dr. Killeen is a research fellow in the National Clinician Scholars Program. She is interested in investigating barriers to eye care, designing interventions to strengthen the delivery of ophthalmic services, and advocating for policies that improve vision health around the world. She enjoys travel, hiking, biking, and cooking.

E-Mail: okilleen@med.umich.edu

Philip Veliz, PhD

Assistant Research Professor

Dr. Veliz is an Assistant Research Professor at the School of Nursing's Applied Biostatistics Laboratory and Associate Director of the Sport, Health, and Activity Research and Policy Center. Dr. Veliz's research primarily involves examining large-scale secondary data sets. He is a co-investigator on several NIH funded projects. He and Dr. Ehrlich are working together on various projects to study the relationship between sensory and cognitive impairments and dementia.

E-Mail: ptveliz@med.umich.edu

Yunshu Zhou, MS

Statistician Senior

Yunshu graduated with a master’s degree in biostatistics and has been working in medical research since. She finds it truly rewarding to help improve health and quality of lifethrough her research. Her current research interests focus on ophthalmology and aging-related conditions. She routinely works with big data, including administrative claims and complex population-based survey data.

E-Mail: yunshuz@med.umich.edu