Visual persistence was investigated in adults with and without dyslexia in order to determine whether dyslexic adults demonstrate problems similar to those found in childhood dyslexia. Results showed that sensitivity of dyslexic adults was impaired when parts of a test stimulus were presented to adjacent retinal areas, suggesting that under…

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…

A vision screening program established at a facility for 271 individuals with severe or profound mental retardation used the acuity card procedure as its measure. The procedure was found to be a valid and reliable screening tool for this population. A few residents had good visual acuities, whereas the acuities of others were poor. (JDD)