- American Academy of Ophthalmology
- National Eye Institute
- U.S. National Library of Medicine
- Prevent Blindness America
- Internet Ophthalmology
- Wills Eye Institute®
- University of Iowa
Low Vision Resources
- National Association for Visually Handicapped
- National Library Service for the Blind and Physically Handicapped, Library of Congress.
- Maxi Aids and Appliances for Independent Living
- ZoomText Low Vision Software
- Independent Living Aids, Inc.