Massachusetts Eye Research and Surgery Institution (MERSI) is pleased to announce our second practice for retina care located at 10 Hawthorne Place in Boston, MA. As of July 1st, 2018, Vitreoretinal Specialist, Peter L. Lou, MD will join Peter. Y Chang, MD to provide every patient with the best quality care and individualized treatment plan to manage their eye care needs. Our vitreoretinal practice specializes in various diseases affecting the retina, macula, and vitreous with patients of all ages.

Dr. Lou or Dr. Chang are both accepting new patients. Dr. Lou is seeing patients on a Tuesdays, Wednesdays, or Thursdays, and Dr. Chang on Mondays and Fridays. Please call (617) 523-0955 to make an appointment in the Boston office for your retina care.

In addition to our retina practice, our main office in Waltham offers a more comprehensive list of ophthalmic services to meet your diagnostic and therapeutic needs. Our treatments range from complex cases of uveitis and rare ocular inflammatory diseases (OID) to more general eye conditions such as cataracts, glaucoma, and dry eye syndrome. On-site infusion suite for Chemotherapy and other therapy treatments, CLIA Certified blood analysis laboratory, and CLIA Certified diagnostic immunopathology laboratory for ocular tissue is available for your convenience. Please visit our services page or call (781) 891-6377 to learn more about the primary location in Waltham or to make an appointment with C. Stephen Foster, MD, Stephen D. Anesi, MD, or Peter Y. Chang, MD.


Peter L. Lou, M.D.

Vitreoretinal Specialist

Dr. Lou has been in private practice, specializing in vitreoretinal diseases and surgery for over 25 years. He is senior surgeon at Massachusetts Eye and Ear Infirmary. A diplomatic of the American Board of Ophthalmology, his post-doctoral training was done at the University of Toronto, with clinical and research fellowships in Ottawa and at the Retina Associates in Boston. He has been on both the teaching staff in ophthalmology at Harvard Medical School and a preceptor for fellowship trainees since 1979…

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Peter Y. Chang, M.D.

Ocular Inflammatory Disease and Vitreoretinal Specialist

Dr. Peter Chang was born and raised in Taipei, Taiwan. He moved to the United States at age 13 and has come to call New England his second home. He received Bachelor of Science in Biology from Brown University in 2004 and Doctor of Medicine from Tufts School of Medicine in 2008. After medical school, Dr. Chang pursued a 2-year Clinical Research Fellowship in Uveitis and Ocular Immunology with Dr. Foster, and he served as the Chief Research Fellow from 2009 to 2010…

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10 Hawthorne Place
Boston, MA 02114
(617) 523-0955