Seventy-eight subjects from the Western Blind Rehabilitation Center at the Palo Alto Veterans Administration Hospital and 34 subjects from the U.C. Berkeley Low Vision Center were surveyed to investigate the use of distance magnifiers for travel. Information is reported regarding demographic characteristics, vision characteristics, usual travel patterns, characteristics of telescopes used by the subjects, telescope training, and travel habits with telescopic devices, along with similarities and differences between the two groups.
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Hall et al. (1987) studied this question.