The term blindness is sometimes used interchangeably with the term sightless. However, individuals who identify as blind, are considered functionally blind, or who meet the legal definition of blindness vary in terms of what they are able to perceive using their eyes. Generally, however an individual who is considered or who identifies as blind has significantly limited vision in both eyes. Depending on the age of onset, progression and underlying causes of blindness, individuals may use a variety of adaptive techniques and assistive technology to perform every day and workplace tasks. Typical accommodations needs include accommodations related to: getting to and from work, on the job travel, getting around the workplace, accessing information, using computers and other equipment, working around vehicles or heavy machinery, emergency preparedness, and use of service animals.