This article illustrates use of the alternating treatment design to assess effectiveness of individualized interventions in low vision rehabilitation. The design was used to determine whether enlarging copy (to one of two magnification levels) and adding contrast would be effective in reducing the time a visually impaired student required to read…

A telephone survey of 147 participants, ages 27 to 96, in a low-vision service program of an urban vision rehabilitation agency found that most respondents continued to use their devices every day for months after low-vision services were completed, and three-fourths reported that the services had a positive impact on their everyday functioning.…