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Our Eye Doctor

Eye care professionals specialize in understanding how the human eye really works, as well as diseases and conditions that affect your vision – many of which do not have obvious symptoms. Eye doctors know how age and risk factors affect vision over time for young and old, and they understand the benefits and features of corrective lenses including eyeglasses and contacts.

Our Markham optometrist takes the time to explain the results of your eye exam, describe your options and listen to your eye care needs. Because maintaining good eye health is an ongoing partnership, we encourage you to ask questions and share your health information, which could be vital to monitoring, diagnosing and treating potential vision problems.

Meet Our Markham Eye Doctor:


Dr. Nan Jiang, OD

Dr. Nan Jiang has more than 18 years of education and practice experience in both Ophthalmology and Optometry. Dr. Jiang graduated from Tong Ji Medical University after five years of study and training in clinical medicine. She then continued her study and internship in Ophthalmology at Zhongshan Ophthalmic Center - Zhang Shan Medical University for three years. She came to Canada and continued her study and training in Optometry at the University of Waterloo in 2002, and graduated with very high academic records and awards in 2006.

Dr. Jiang is a member of the Ontario Association of Optometrists and is a certified optometrist for the treatment of ocular diseases. In addition to general optometry, Dr. Jiang also specializes in Orthokeratology (OK lenses) treatment, which helps kids to the slow down myopia progression and allows them to enjoy good vision in the day without any correction. She helps patients from all backgrounds, providing not only vision care but also the management of ocular medical issues, such as eye infections, inflammation, dry eyes, cataracts, glaucoma, macular degeneration, and diabetic retinopathy.


Dr. Cynthia Tang, OD

Dr. Hei-In (Cynthia) Tang received her Bachelor of Science degree from University of Waterloo, followed by a Doctorate of Optometry degree at Salus University, Pennsylvania College of Optometry. She then completed a residency program in Primary Care & Ocular Disease at Salus University.

Dr. Tang has a special interest in pediatric optometry and completed a pediatrics rotation during her studies. She has taken leadership roles in educating and supervising optometry students in school screenings and clinical settings during her training in residency. Since completing her residency program, Dr. Tang has been practicing as an independent optometrist with main focus on comprehensive eye care, ocular disease, and emergency eye care.

Dr. Tang is fluent in Cantonese, Mandarin, and English. She is currently accepting new patients and is pleased to offer full scope optometric eyecare to patients of all ages.