Stephen B. Prepas, M.D., Eye Surgeon

Stephen B. Prepas, M.D.Dr. Stephen Prepas is a pediatric eye surgeon and eye physician. He has been practicing medicine for 40 years and is Board Certified with the American Board of Ophthalmology. His undergraduate studies were at the University of California, Los Angeles in 1971. In 1975, he attended medical school at the University of California, Irvine, and in 1975, interned at Los Angeles County Hospital – University of Southern California. He was awarded his Pediatric Ophthalmology and Strabismus Fellowship in Brooklyn, N.Y. during 1979-1980.

Affiliated with Hoag Hospital

Hoag LogoDr. Prepas is on staff with Hoag Memorial Hospital, based in Newport Beach, California. He served as the Department of Ophthalmology Chair from 1992-1994. Hoag Memorial Hospital has a medical staff of more than 1,000 physicians representing a broad range of specialties.

Professional Affiliations/Memberships:

Throughout his successful practice, Dr. Prepas has been and remains active in numerous organizations, and has served on medical boards and associations, including the following:


As a volunteer, since 1980, Dr. Prepas has remained committed to medical assistance and procedures both in the U.S. and for developing nations worldwide. The list below defines the dedication and broad scope of this pledge to help all people gain and improve their vision.

Volunteer Services:

  • Surgical Eye Expeditions, Inc. – S.E.E.
  • Board of Directors, 2000-2006; Active Member, 1986-present
  • La Paz, Mexico, 1986
  • Borneo, Malaysia, 1987
  • Parral, Mexico, 1988
  • Borneo, Malaysia, 1989
  • Zacatecas, Mexico, 1990
  • Java, Indonesia, 1990
  • Zacatecas, Mexico, 1991
  • Parral, Mexico, 1992
  • Saigon, Viet Nam, 1993
  • Ulaan Baator, Mongolia, 1995
  • Harare, Zimbabwe, 1996
  • San Jose, Costa Rica, 1996
  • Kluj, Romania, 1996
  • Katmandu, Nepal, 1997
  • Thanh Hoa, Viet Nam, 1999
  • Windhoek, Namibia, 2001
  • Windhoek, Namibia, 2002
  • Hoa Binh, Viet Nam, 2002
  • Harare, Zimbabwe, 2003
  • Hanam, Viet Nam, 2003
  • Lang Son, Viet Nam 2004
  • Hui Duong, Viet Nam 2005
  • Vinh, Viet Nam 2006
  • Rach Gia, Viet Nam 2007
  • Vinh Phuc, Viet Nam 2008
  • Windhoek, Namibia 2011
  • Takeo, Cambodia 2013
  • Oshakati, Namibia 2015

Related Links:

Academic Appointments:

  • Clinical Instructor, Ophthalmology, UC Irvine, 1980-82
  • Assistant Clinical Professor, UC Irvine, 1982-1991
  • Associate Clinical Professor, UC Irvine, 1991-2002
  • Assistant Clinical Professor, George Washington University, Washington DC, 2002-present
  • Volunteer Attending Staff, Pediatric Ophthalmology, USC School of Medicine, 2014-present


  • Undergraduate: UCLA
  • Medical School: UC Irvine College of Medicine
  • Ophthalmology Residency: UC Irvine College of Medicine
  • Pediatric Ophthalmology Fellowship: SUNY-Kings County Hospital Center, Brooklyn, New York


  • Co-recipient (with Robbie Prepas), Humanitarian of the Year, 1996, National Conference, Orange County Chapter
  • Teaching Awards, UC Irvine Department of Ophthalmology, 1985-1986
  • Service Award, Braille Institute, 1985
  • Service Awards, National Society to Prevent Blindness, 1985-1986

Clinical Research:

  • Clinical Investigator, Santen Pharmaceuticals, Phase 3 Studies, 1998-1999
  • Clinical Investigator, Alcon Pharmaceuticals, 2000-2003

Published Work:

  • Prepas, SB, “Light, Literacy and the Development of Myopia,” J Med Hypotheses, Sep 2007
  • Prepas, Stephen, “Central Effects on Accommodation,” Peds Day, AAO, Las Vegas, Oct 2006
  • Prepas, Stephen, Kieu, Quynh, and Guramatunhu, Solomon, “The Role of the Fellowship Trained Pediatric Ophthalmologist in Volunteer Missions,” AAPOS Annual Meeting, 2005
  • Prepas, Stephen, “A Linguistic View on Reading Disorders for the Ophthalmologist,” Oct. 2004, presented at Annual Meeting, American Academy of Ophthalmology, New Orleans, LA.
  • Prepas, Stephen B., “Neonatal Ophthalmology,”
    Chapter in Kelly’s PRACTICE OF PEDIATRICS, Harper and Row, 1985
  • Prepas, S. and McBeath, J., “Posterior Segment Trauma in Children,”
    poster at 1984 AAPOS Meeting, Vail, CO.
  • Goldstein, J. and Prepas, S., “Needle Types in Strabismus Surgery,”
  • Prepas, Menon and Clark, “Pharmacologic Effects of DMPEA,”

Practice Services

  • Pediatric Ophthalmology
  • Strabismus
  • Adult General Eye Exams
  • Optical Services