People with visual impairments use a wide variety of sensory information to understand the world around them. Many persons who are visually impaired (i.e., those who are blind or have low vision) use some form of echolocation to monitor the space around them. This process of identifying the properties of an object may be referred to as…

Although individuals who are blind have used a stick or a cane for their independent travel since the early years of human history, designs for modern long canes did not appear until World War II, when the systematic long cane techniques were developed by Hoover (1962). Ergonomic factors, such as the length of the cane, may affect how well a cane…