- American Board of Ophthalmology
- American Medical Association
- American Society of Cataract and Refractive Surgery (ASCRS)
- Australian National University Centre for Visual Sciences
- Caere/OmniForm
- Center for Visual Science – University of Rochester
- Centers for Disease Control
- Columbia University – Center for Retinal Research
- Food and Drug Administration
- German Ophthalmological Society
- Global Health Network
- Harvard University_Virtual Library -Biomedicine Index
- Indiana University School of Optometry
- Internet Ophthalmology – University of Buffalo Dept. of Ophthalmology
- Johns Hopkins University School of Medicine – Research and Training in Hearing and Balance
- Joint Commission on Allied Health Personnel in Ophthalmology (JCAHPO)
- Kellogg Eye Center – University of Michigan
- Mayo Clinic
- Medical Group Management Association (MGMA)
- Medical Matrix
- Medline
- Melbourne University (Australia) – Dept. of Ophthalmology
- Mie School of Medicine (Japan) – Dept. of Ophthalmology
- Modeling the Human Eye and Orbit – University of Illinois/Chicago
- Moorfields Eye Hospital
- Multimedia Medical Reference Library
- NASA Vision Science
- National Eye Institute
- National Keratoconus Foundation
- National Library of Medicine
- Neuroscience Web Search
- Ocular Immunology and Inflammation
- Ophthalmic Pathology – University of Utah
- Ophthalmic Research Laboratories – Cedars-Sinai Hospital
- Ophthalmology Abbreviation Translator
- Ophthalmology Online
- PharWeb
- PharmInfoNet
- Physicians Online
- Radiological Society of North America
- Retinal Microcircuitry Lab – University of Pennsylvania Medical Center
- Review of Ophthalmology
- Sarcoidosis World-wide Support Groups
- Schnepens Eye Research Center – Harvard University
- Schneppens Eye Research Center – Harvard University
- Shiley Eye Center – University of California/San Diego
- Smith Kettlewell Eye Research Institute
- Stanford Vision and Imaging Science
- Texas Ophthalmological Association
- Texas Tech University Health Sciences – Dept. of Ophthalmology and Visual Sciences
- The Foundation Fighting Blindness
- Townsend Frew & Co., L.L.C.
- University of California/Irvine – Vision Research
- University of Illinois/Chicago – Dept. of Ophthalmology – UIC Eye Center
- University of Iowa – Dept. of Ophthalmology
- University of Iowa – Virtual Hospital
- University of Melbourne (Australia) – Dept. of Optometry
- University of Minnesota – Dept. of Physiology – Retina and Vision
- University of Oklahoma – Dept. of Ophthalmology
- University of Pisa (Italy) – La Clinica Oculistica Virtuale
- University of Pittsburgh – Dept. of Ophthalmology
- University of Wisconsin Medical School – Dept. of Ophthalmology
- University of Zurich – Vestibulo-Oculomotor Laboratory – Dept. of Neurology
- Virginia Society of Ophthalmology
- Virtual Hospital – Dept. of Ophthalmology
- Washington University – Dept. of Ophthalmology
- Wills Eye Hospital (Wills Web) – Thomas Jefferson University – Dept. of Ophthalmology
- Wilmer Eye Institute – Johns Hopkins University
- Yale University School of Medicine – Dept. of Ophthalmology and Visual Sciences
