Convenient locations in Portland

St. Vincent




Meet Our Doctors

John R. Samples, M.D.

Dr. John Samples, M.D.Dr. John Samples practices as a Glaucoma Consultant at The Eye Clinic while also maintaining an ophthalmology practice in Olympia, Washington. Previously, he was Professor of Ophthalmology at the Oregon Health and Sciences University and the Casey Eye Institute in Portland. He was also Director of medical student ophthalmic education at OHSU for more than 20 years. He is now an Emeritus Professor with OHSU and a Clinical Professor at Rocky Vista University in Parker, Colorado, and serves as a Director of the Western Glaucoma Foundation.

Dr. Samples earned his undergraduate degrees in Psychology and Biology from Stanford University, his master’s degree in Neurobiology from Stanford University and his medical degree from the University of California, San Diego. He continued his training with Residencies in Neurology and Ophthalmology at the Mayo Clinic, where he was Chief Resident in Ophthalmology. Dr. Samples then completed a Fellowship in Cornea and External Disease and in Glaucoma, both at OHSU.

Since joining The Eye Clinic in January 2008, Dr. Samples has been working to develop several new glaucoma-related drugs and surgical procedures. He is also quite engaged in fundraising for the Western Glaucoma Foundation. Dr. Samples has a particular interest in establishing an eye hospital in Madagascar, for which he and his wife have provided monthly teleconferences on glaucoma.

For more than 20 years, Dr. Samples has been actively involved within the professional community, including the American Academy of Ophthalmology (AAO), American Glaucoma Society and American Society for Cell Biology. He has given a course on the Cell Biology of Glaucoma at over 20 annual AAO meetings and has received numerous awards including the AAO Senior Achievement Award and the AAO Honor Award. For the last 11 years, Dr. Samples has organized numerous meetings including an annual mini fellowship in glaucoma held in Napa Valley under the sponsorship of University of California, San Francisco, and a Trabecular Meshwork Study Club held annually in conjunction with the American Society for Cell Biology.

Dr. Samples lectures extensively in the United States and has also presented in countries around the world. He organized the Oregon Academy of Ophthalmology’s annual meeting as the chair of the society’s education committee. In addition, he has 149 peer-reviewed publications to his credit as well as numerous book chapters and abstracts.

John August Topinka, Jr., M.D. - Retired 2013

Dr. John Topinka, M.D.Dr. John Topinka was in private ophthalmology practice with The Eye Clinic from 1974-2013.  His focus was on all aspects of general ophthalmology, cataracts, intraocular lenses, glaucoma and laser procedures. Dr. Topinka received his Bachelor of Arts degree in Chemistry from Denison University in Granville, Ohio, and his medical degree from the University of Cincinnati.  He continued his training with an Internship at Highland Alameda Hospital in Oakland, California, before serving as a United States Army Captain in Korea.  Dr. Topinka went on to Residencies in General Surgery and Internal Medicine, for which he was selected as Chief Resident, at St. Luke’s Hospital in Cleveland.  He then completed another Residency in Ophthalmology at Case Western Reserve University in Cleveland. Dr. Topinka will now focus his energy on creating a Museum of Health and Education to benefit children and their families.

Patrick J. Chan, M.D. - Retired 2012

Dr. Patrick Chan, M.D.Dr. Patrick Chan earned his undergraduate degree from Carroll College in Helena, Montana, and his medical degree from the Loyola Stritch School of Medicine in Maywood, Illinois. He continued his training with an Internship and a Residency in Ophthalmology at Cook County Hospital in Chicago.

Dr. Chan practiced at The Eye Clinic from 1972-2012. After retiring, he has dedicated time to his family, friends, and Bo Ai School. Bo Ai is a school serving children in Shanxi Province, China. For more information, please visit

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