premise: These amendments to the Vocational Rehabilitation Act were designed to help provide for more specialized rehabilitation facilities , for more sheltered and `` half-way '' workshops , for greater numbers of adequately trained personnel , for more comprehensive services to individuals ( particularly to the homebound and the <mask> ) , and for other administrative improvements to increase the program 's overall effectiveness .
hypothesis: the proper context for <mask> here should be people who have severe visual impairments, considered as a group