Edward Y. Koo, M.D.
Dr. Koo is a board-certified comprehensive Ophthalmologist specializing in cataract and refractive surgery. Dr. Koo was recognized early on as a gifted individual and was selected out of high school for a special accelerated six year BA/MD program at the UMKC School of Medicine. After graduating medical school at the tender age of twenty-three, Dr. Koo next completed a pediatric residency at UCLA and then went on to do a second residency in ophthalmology at the New England Eye Center - Tufts University School of Medicine in Boston. Dr. Koo has been board-certified in both ophthalmology and pediatrics. He currently dedicates his medical/surgical practice to ophthalmology only.
Dr. Koo performs small-incision, no-stitch cataract surgery, LASIK, and refractive surgery. He also teaches as an Associate Clinical Professor of Ophthalmology at the UCSF School of Medicine.
Dr Koo has won awards and patents for his designs in cataract micro-surgical instruments and has published articles on his surgical procedures.
Dr. Koo enjoys serving on annual cataract mission trips to Mexico and Panama. In addition, he enjoys sporting clays, skiing, scuba diving and has a 1st degree black belt in Tang Soo Do Karate. He and his wife have 2 daughters.
Kenneth C. Chern, M.D., M.B.A
Dr. Chern is a board-certified comprehensive Ophthalmologist specializing in cataract surgery and corneal diseases. Dr. Chern graduated from Northwestern University Medical School in Chicago, Illinois. His residency was at the Cleveland Clinic; followed by a fellowship in corneal diseases at Francis I. Proctor Foundation at the University of California at San Francisco. He is the only ophthalmologist in the area with this type of specialized fellowship training and experience.
In addition to LASIK and refractive surgery, Dr. Chern performs corneal transplantation, small-incision cataract surgery, and reconstruction of the ocular surface. He is an Assistant Clinical Professor of Ophthalmology at UCSF and has published four books on the fundamentals of ophthalmology.
Dr. Chern and his wife have a son and a daughter. In his free time he enjoys gourmet cooking, cycling and cross country skiing.
Robert R. Elliston, M.D.
Dr. Elliston is a Board Certified Ophthalmologist specializing in modern small incision, no stitch cataract surgery. Dr. Elliston did his undergraduate education at Ohio Wesleyan University in Delaware, Ohio. He subsequently graduated from the University of Louisville School of Medicine. After getting married, he and his wife moved to San Francisco where he did a rotating internship at the U.S. Public Health Service Hospital in San Francisco. The following year he started Ophthalmology training at Barnes Hospital, Washington University in St. Louis, Missouri and subsequently completed the final two years of his Ophthalmology Residency training at the U.S. Public Health Service Hospital in San Francisco.
Dr. Elliston has served as Vice Chairman and Chairman of the Ophthalmology Section of the Department of Surgery at Peninsula Hospital. He was a member of the Credentials Committee of Mills-Peninsula Health Services from 1992 to 1999, serving as Chairman from 1995 to 1998. He was a member of the Professional Staff Executive Committee at Mills-Peninsula Health Services from 1984-1986, 1992-1994 and served as Secretary-Treasurer from 1994-1998. He has been on numerous other committees at Mills-Peninsula Health Services. He has also served on numerous committees of the San Mateo County Medical Association, serving on the Board of Directors from July 1979 to June 1985. He has been a member of the California Medical Association since 1978.
In his free time, Dr. Elliston enjoys gardening, nature and landscape photography and traveling.
Peggy Zeng, O.D.
A native of the San Francisco Bay Area, Dr. Zeng attended the SUNY College of Optometry. Dr. Zeng is committed to promoting ocular health by providing comprehensive eye examinations and educating patients on their overall eye health. She is experienced in diagnosing various eye diseases including macular degeneration, cataracts, and dry eye and can also treat eye infections. Dr. Zeng is glaucoma certified and able to diagnose and treat the disease, one of the leading causes of blindness in the U.S. Dr. Zeng brings a mixture of enthusiasm, openness and care to the table when meeting with her patients.
Dr. Zeng loves dining out with family and friends and exploring new restaurants.
Katherine Aquino, O.D.
Born, raised and still living in San Francisco, Dr. Aquino went to Lowell High School before attending the University of California at Berkeley, where she received a B.A. in Integrative Biology. She then completed her Doctorate of Optometry at the University of California Berkeley School of Optometry. Dr. Aquino has been practicing with Dr. Elliston and Associates since 2000. She specializes in comprehensive optometric exams as well as contact lens fits.
Dr. Aquino enjoys playing the piano, scrapbooking and traveling with her husband and their two sons.