Attention Joslin Patients:

Joslin Diabetes Center is responding to the COVID-19 pandemic in a variety of ways including remote care appointments, onsite appointments for urgent care cases and providing online educational resources. Please visit our main COVID-19 page for all of this information in both English and Spanish. If you are experiencing symptoms of COVID-19, call your primary care provider. For emergencies, please call 911.

Alert Close

Dr. Sun is a vitreoretinal surgeon and Chief of the Center for Clinical Eye Research and Trials of the Beetham Eye Institute, Joslin Diabetes Center. She is an Associate Professor of Ophthalmology at Harvard Medical School. She also serves as the Chair for the Diabetic Retinopathy Clinical Research Network ( and has chaired multiple nationwide, multicenter studies addressing new treatments and methods of evaluation for diabetic eye disease. Her research projects include the search for biomarkers of functional and anatomic outcomes in diabetic retinopathy and diabetic macular edema through utilization of advanced retinal imaging techniques.

Dr. Sun's research projects include the search for protective factors against retinal complications in diabetes.  She also leads active studies identifying biomarkers of functional and anatomic outcomes in diabetic retinopathy and diabetic macular edema through the utilization of advanced imaging techniques such as adaptive optics scanning laser ophthalmoscopy and spectral-domain optical coherence tomography angiography. 

Teaching Appointment
Harvard Medical

Medical School
Harvard Medical School/ BWH

Massachusetts Eye & Ear Infirmary

Mass Eye and Ear Infirmary


  • Ophthalmology
  • Eye Care
  • Diabetic Retinopathy

Dr. Sun has chaired 5 nationwide, multicenter clinical studies, including the DME FOUND Study (Diabetic Macular Edema Found by OCT Utilization at Non-Ophthalmic Diabetes care visits) evaluating the use of point-of-care noninvasive retinal imaging at primary diabetes care visits to identify patients at risk for vision loss from diabetic macular edema and a phase 1 trial of an intravitreous plasma kallikrein inhibitor for diabetic macular edema.  She served as the first nationwide Protocol Chair of both the Ultrawide Field Imaging Study (Protocol AA) and the Prevention of Vision Threatening Complications in Eyes at High Risk through Anti-VEGF Treatment (Protocol W) Study. Dr. Sun is the CME Editor for JAMA Ophthalmology and was the Section Editor for the Microvascular Complications: Retinopathy section of Current Diabetes Reports from 2008-2017. Her recent publications have included articles in both the New England Journal of Medicine and JAMA.  She received the 2008 ARVO/Alcon Early Career Clinician-Scientist Research Award and was recognized in 2016 with the Research to Prevent Blindness Physician-Scientist Award. 

Contact Information

Office Phone

(617) 309-4239

jennifer.sun [at]

News Related to Jennifer Sun

Joslin researchers uncover protective factor in diabetic eye disease

Increased levels of RBP3 both protect against and treats diabetic retinopathy BOSTON – (July 3, 2019) – Researchers at Joslin Diabetes Center have shown that a protein found in the eye can protect...
Read more on Joslin researchers uncover protective factor in diabetic eye disease