http://www.nih.gov/nidcd/health/pubs_st/smltaste.htm
The site from the National Institute on Deafness and Other Communication Disorders has some useful information on the chemosenses along with links to research sites.

http://www.nih.gov/nidcd/health/hb.htm
There are a lot of helpful facts and links at this site on hearing and balance for such things as cochlear implants, early screening, presbycusis, and acoustic neurinoma.

http://www.nih.gov/nidcd/health/pubs_hb/otitism.htm
This page on otitis media includes a definition, causes and effects of otitis media, an explanation on how people hear, and a labeled diagram of the ear. The author of the site also explains why children are more commonly affected than adults.

http://www.nih.gov/nidcd/health/pubs_hb/tinnitus.htm
This site provides an easy-to-understand explanation for a newly discovered cause of tinnitis.

http://www.mediconsult.com/mc/mcsite.nsf/condition/general~Educational+Material~MCOR-47YKL9
Concerned about middle ear infections? This page presents the various forms of otitis media and their treatment. There are a number of links to related ideas.

http://www.ascrs.org/
Do you know somebody who needs cataract surgery? Are you interested in getting rid of those eyeglasses? Perhaps you want to know more about myopia? Check out this page from the American Society of Cataract and Refractive Eye surgery.

http://www.eyenet.org/public/anatomy/anatomy.html
This shows a very clear labeled diagram of the eye.

http://www.eyenet.org/public/pi/eye_health/safety/uv_faq.html
This page from the American Academy of Opthamology discusses dangers of ultraviolet light to the eye. Some of the topics include cataract and macular degeneration.