Techniques used by the Special Visual Assessment Clinic for the Handicapped at the University of California-Berkeley School of Optometry are designed to serve handicapped children and adults generally considered "difficult to assess." This article describes the clinic's assessment goals, clientele, and methods for assessing visual ability and…

The authors describe personal experiences with Usher's Syndrome, a condition involving visual impairment (due to Retinitis Pigmentosa) and deafness. Prevalence and onset of Usher's Syndrome are described along with characteristics of two different types. Problems connected with diagnosis are reviewed, including genetic aspects and the progressive…

A screening program for vision problems and Usher's Syndrome (a common cause of deaf-blindness) among 210 hearing-impaired students found 44 percent had significant vision problems and 1 percent had Usher's Syndrome. The program involved an interagency network of school, health care, and support personnel and utilized a dilated ophathalmological…

The Low Vision Service of Perkins School for the Blind (Massachusetts) developed a model project to provide comprehensive vision evaluations and follow-up services to 169 children with dual sensory impairments throughout New England. This article describes the project's objectives, the population served, and the procedures for implementing…

The visual acuity of 8 children, aged 2-7, with low vision and multiple handicaps was effectively tested using the Teller Acuity Cards and a preferential-looking procedure with operant modification. This inexpensive procedure was found to be suitable for at-home testing by itinerant vision specialists in developing countries or rural areas. (DB)

This article describes addition of a "learn a routine" procedure to functional visual assessments of children with severe neurological and physical disabilities. The procedure capitalizes on the child's interest of the moment and provides information on the child's patterns of responses, ability to accommodate to variations of a stimulus, and…

Vision assessment in multiply impaired children (ages 3-19, n=50) was studied by evaluating questionnaires completed by the psychological services responsible for determining their educational requirements. Relatively few conducted assessments of visual functioning but chose instead to determine level of visual impairment from medical,…

A set of developmental norm data for reflexive and voluntary visual-motor development was compiled, revised after extensive clinical use, and found to have highly significant interrater agreement. Use of the resultant Erhardt Developmental Visual Assessment is illustrated with a multiply handicapped three-year-old. (Author/JDD)

This booklet collects seven papers drawing on research performed through the Communication Skills Center for Young Children with Deaf Blindness of the Oregon State System of Higher Education and its affiliated sites. Papers include: "Research on Vision Assessment" (Pamela Cress); "Use of Microswitch Technology To Facilitate Social…