From Second Life Wiki
Accessibility means the degree to which an object, function, service, or environment is available for use by as many people as possible.
In many countries accessibility is legislated and thus may be more clearly defined.
Universal Design (UD) is an approach to creating structures, products, and environments that are accessible to all people.
Disability means a lack of one or more human abilities, which include physical, mental, emotional, sensory, and developmental abilities. The effects of chronic illnesses are often included as disabilities.
The term “disability” is often contrasted with the term “impairment,” which indicates a characteristic of an individual.
Assistive technology (AT) includes all devices (whether assistive, adaptive, or rehabilitative) that help people accomplish tasks they can not do adequately or at all without the device.
“People first language” is one way of emphasizing the similarities among all people before recognizing differences.
Accessibility Issues with Second Life
Solutions and Sources
Keyboard/Mouse Impairment Accessibility Issues
Including inworld work-arounds, voice recognition software (built-in and purchased), alternative keyboards and other input options
Hearing Impairment Accessibility Issues
Including V2T transcription, delayed transcription, captioning
Print Impairment Accessibility Issues
Including adjusting UI size, Voice Chat, T2V transcription, text reader devices
Other Accessibility Issues
Including safety for adult-children
Discussions of Accessibility Issues
Transcripts and calendar of events
Public Issue Tracker (JIRAs) Related to Accessibility Issues
Including directions how to use it
User-developed Projects To Develop Accessibility Tools
Including the Max technologies, Restricted Viewer, Access Viewer, and Radegast