Samuel Chi-Hung Yiu, M.D., Ph.D., M.S.

Headshot of Samuel Chi-Hung Yiu
  • Associate Professor of Ophthalmology

Languages: English, Cantonese


Cataracts, Corneal Diseases, Dry Eyes, Ophthalmology, Refractive Surgery more

Research Interests

Basic Research; Dry Eye; Lacrimal Gland Physiology; Nanodrug delivery more

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Insurance Information

Main Phone

Outside of Maryland & Washington D.C.

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International Patients

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Johns Hopkins Bayview Medical Center

Appointment Phone: 410-550-2360
4940 Eastern Avenue
Baltimore, MD 21224
Phone: 410-550-2360
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The Johns Hopkins Hospital

Appointment Phone: 410-955-5490
600 N. Wolfe Street
Wilmer Eye Institute
Baltimore, MD 21287
Phone: 410-955-5490
The Johns Hopkins Hospital - Google Maps


Samuel C. Yiu, M.D., Ph.D., is an associate professor of ophthalmology at the Wilmer Eye Institute, specializing in cornea and external eye diseases, cataracts and refractive surgery (LASIK). In addition, he is a nationally and internationally recognized specialist in ocular surface diseases and ocular surface reconstruction surgery.

Dr. Yiu received his M.Sc. (applied biometry) and Ph.D. (physiology and biophysics) from the University of Southern California. He then completed a post-doctoral fellowship in lacrimal physiology at the Schepens Eye Institute at Harvard Medical School and went on to earn his M.D. from the University of Alberta in Canada. Dr. Yiu completed an internship and his ophthalmology residency at Dalhousie University in Halifax, Nova Scotia and a fellowship in cornea, external disease and refractive surgery at the University of Southern California’s Doheny Eye Institute. After serving as the director of Doheny’s Ocular Surface Center and co-director of Doheny’s cornea division, Dr. Yiu joined the Wilmer faculty in 2011 and spent two years as the chief of the cornea division at King Khaled Eye Specialist Hospital (KKESH), Wilmer’s affiliate hospital in Riyadh, Saudi Arabia, before returning to Baltimore in 2013. more


  • Associate Professor of Ophthalmology

Departments / Divisions

Centers & Institutes



  • MD; University of Alberta-Faculty of Medicine & Dentistry (1994)


  • Ophthalmology; Dalhousie University Faculty of Medicine (1999)


  • Cornea | External Diseases & Refractive Surgery; University of Southern California (2001)

Board Certifications

  • American Board of Ophthalmology (Ophthalmology) (2004)

Research & Publications

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