3555 Don Mills Road, Unit 7
North York, ON  M2H 3N3
T: (416) 499-4852
F: (647) 689-2526

We open 11am-7pm, 7 days a week

Who We Are

Our goal is to provide you and your family with a positive experience every time you visit us.

At Skymark Eye Clinic, we believe in delivering high quality eye care services to all our patients from beginning to end.

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Dr. Yunfan Zhang

Dr. Yunfan Zhang is an optometrist.  He graduated from Shanghai Jiao Tong University School of Medicine in China. During his residency in ophthalmology, the heavy workload in the hospital brought him plenty of clinical knowledge and surgical skills, as well as experiences in patient primary care, ocular diseases, and therapeutics.  With strong interests in research, he then joined research team in Wayne State University, Detroit, Michigan, where he focused on contact lens related ocular infection research, and published many scientific papers.

Dr. Zhang successfully completed Canadian board examinations and is certified in the use of therapeutic pharmaceutical agents for the diagnostic and treatment of eye diseases.  He is an active member of The American Academy of Orthokeratology and Myopia Control.

Dr. Zhang is fluent in English and Mandarin and can communicate in Cantonese as well.  He is committed to increasing awareness about the importance of comprehensive eye exams and myopia management.  He is dedicated to offering the highest standard of patient care and welcomes new patients.


Dr. Jonathan Siu

Dr. Jonathan Siu received his Honours Bachelor of Science degree at the University of Waterloo. He continued his studies there and earned his Doctorate of Optometry, graduating on the Dean’s Honour List on June 2018. During his training, Dr. Siu completed his ocular diseases and therapeutic externship at Scarborough Eye Associates. There, he trained under the supervision of ophthalmologists specializing in retina, glaucoma, cataract and laser refractive surgery.

Dr. Siu is a member of the College of Optometrists of Ontario and a member of the Ontario Association of Optometrists. He is passionate about patient education and is dedicated to providing the best eye care possible to all his patients. Dr. Siu also has special interests in contact lens and dry eyes therapy.

On his spare time, he enjoys cooking, playing the piano and spending quality time with his family. Dr. Siu is fluent in both English and Cantonese, and is welcoming new patients.