Virtual computer monitor for visually-impaired users

Conventional computer display products for the visually impaired are limited by the amount of enlarged imagery that can be displayed at any one time, and by awkward methods for navigating about the scene. This paper describes a prototype system designed to address these problems by providing a head-mounted display interface which allows the user to position a cursor anywhere on an enlarged virtual page by turning to view that location in space. Also discussed are human subject trials underway at SRI International and the Veterans Administration under a US Department of Health and Human Service research grant, and technical issues requiring further investigation.

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