- American Academy of Optometry: http://www.aaopt.org/
- American Optometric Association: http://www.aoa.org/
- Association for Research and Vision in Ophthalmology (ARVO): http://www.arvo.org/
- Association of Schools and Colleges in Optometry (ASCO): http://www.opted.org/
- British Contact Lens Association: http://www.bcla.org.uk/home.asp
- Collaborative Longitudinal Evaluation of Keratoconus Study (CLEK): https://vrcc.wustl.edu/clekarchive/
- Contact Lens Association of Ophthalmologists (CLOA): http://www.clao.org/
- Contact Lens Council: http://www.mycontactlenses.org/
- Contact Lens Manufacturers Association: http://www.clma.net/
- Contact Lens Society of America (CLSA): http://www.clsa.info/
- International Association of Contact Lens Educators (IACLE): http://www.iacle.org/
- National Eye Institute (NEI): http://www.nei.nih.gov
- Rigid Gas Permeable Lens Institute (RGPLI): http://www.rgpli.org
- U.S. Food and Drug Administration: http://www.fda.gov