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Vision Tests         
Web Pages
Optometrists Network
Listing of optometrists who provide vision therapy. Mainly US, some non-US optometrists listed.
Ophthalmology Portal
Comprehensive portal for eye care professionals.
The Dispensing Optician
Aimed at opticians interested in continuing education.
Optcom Online Community
Online community for optometrists, including forums and downloads.
Humor site aimed at optometrists.
Featuring international news, optometry recruitment, Optician archive, online dictionary, and industry directory. By Butterworth-Heinemann and Optician.

The origins of the Medpage Directory is based on the Open Directory