A-Z Deafblindness
- An in depth article by Mary Guest, Head of Usher Services at Sense, about Usher syndrome. Includes detailed description of what it is, the symptoms, genetics, transmission, the problems associated with it and what can be done.
- http://www.deafblind.com/usher.html

Usher Syndrome
- A description of this disease from Retinal Preservation Foundation of South Africa.
- http://www.rpsa.org.za/a6.htm