GreatFolder.com links to global website with many listing and categories such as artist, business, advertising, real estate, fashions, health, hobbies, recreation and sports, entertainment and games.
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Eye Disorders
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ContrastSensitivity.net
Source of information on vision science, vision testing technology, contrast sensitivity, and functional vision.
http://www.contrastsensitivity.net
Eye Digest
The University of Illinois Eye & Ear Infirmary published reference on aging eye vision, cataracts, macular degeneration, glaucoma, and LASIK.
http://www.agingeye.net
National Eye Research Foundation (NERF)
Provides consumers and professionals with access to technology as it develops.
http://www.nerf.org