Contrast thresholds for sine-wave gratings of spatial frequencies of 2, 4, 12, and 16 cycles per degree were determined for normal and disabled readers at a range of stimulus durations. The differences in sensitivity pattern across spatial frequencies was greatest at stimulus durations approximately equal to fixation durations during reading.…

This article describes a device, the Visual Hand Display, used by pediatric ophthalmologists at the Children's Low Vision Center (Boston) to evaluate a child's postoperative visual functioning. The device consists of different sized black stripes on white circles and a face. (DB)

The article discusses the rationale for a program to develop efficiency in visual functioning for low vision individuals. Detailed identification of all visual functions necessary for maximum efficiency, along with specification of visual tasks related to developmental milestones are charted. (Author/PHR)

This article discusses the increasing incidence of cortical visual impairments, resulting from medical advancements making possible the survival of critically ill children with severe brain damage. Discussed are the prevalence of multiple handicaps, formation of visual concepts, foreground/background distinction, potential for mainstreaming, use…

In order to assess vision in Alzheimer's disease, gerontologists must use tests that make minimal cognitive demands on the subject. Using such tests revealed a pattern of deficits in color discrimination, stereoacuity, contrast sensitivity, and backward masking. Impaired vision predicts deficient performance on numerous tests of cognition. (JPS)

Although several vision screening techniques are available for infants, none is routinely used. Visual deficits are often first detected through required preschool vision screenings, which vary in their comprehensiveness. No standardization for testing or administration exists. Some of the testing procedures used may have inappropriately high…

Damage to the brain in children results in a multiplicity of visual difficulties which have to be managed both at home and at school. Parents of such children have detailed knowledge about the nature and characteristics of their child's visual difficulties and develop a range of coping strategies, often without realizing they have done so. The…