Information Transfer Problems of the Partially Sighted

The fourth in a series of reports sponsored by the Social and Rehabilitation Service of DHEW dealing with the problems of the partially sighted. The first three reports cover the major areas of research and the present report gives the results of four research efforts that emanated from the original work. These include (1) the design and construction of an experimental closed circuit TV system that allows the partially sighted to type from a printed or handwritten manuscript; (2) the pseudocolor system that was used to study the gray value and color sensitivity of two partially sighted subjects; (3) an experiment to determine how the reading speed of normally sighted people, using an individualized CCTV system for the partially sighted, varies as a function of the number of alphanumeric symbols spanning the system's monitor screen; and (4) methods for detecting or determining visual color deficiencies. (See also R-1402, R-1537, R-1614.)