prism glasses


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prism glasses

An optical device, used by persons who must lie supine for extended periods, to allow them to view objects in their environment without eye or neck strain. Prisms mounted on spectacle frames bend the image to make the feet visible while the person is looking straight ahead.
See also: glasses
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References in periodicals archive ?
Prism glasses are based on the principles of mirror therapy, but were designed to allow portable treatments which can be performed more regularly.
Bultitude and Rafal (2010) provided a single case report of a patient with early CRPS managed with prism glasses and mirrors.
Rove had actually been commenting on Clinton's prism glasses.