The international peer-reviewed journal of record in the field
of vision loss
Orientation and Mobility
B.B. Blasch, S.J. LaGrow, W.R. De l'Aune
Abstract: The various devices and techniques available for nonvisual travel may be evaluated in terms of the mobility coverage they provide. However, the coverage provided varies in relation to the function of the device or technique used. The long cane and the various techniques for its use are designed to provide the traveler with object, surface, and foot-placement preview. This article further refines the definition of those functions while specifying each in terms of its measurement.
R.G. Long, L.W. Boyette, N. Griffin-Shirley
Abstract: This article reports the results of a study that compared the community-travel habits and perceptions of older persons with visual impairments to those of older person without visual impairments. Factors that accounted for variations in the frequency of and satisfaction with travel in the visually impaired group were also explored. Implications of the findings for providers and consumers of rehabilitation services are discussed.
S.A. Haymes, D.J. Guest, A.D. Heyes, A.W. Johnston
Abstract: The relationship between orientation and mobility (O&M) performance and residual vision is not clearly understood. Intuitively, good vision should result in good O&M, and little or no vision should result in poor O&M. However, the literature suggests a more complicated picture. The authors propose that certain psychological variables, such as particular personality traits and intelligence, may account for some of the complexity. This article reviews previous work in this area and outlines directions for future research.
R. Markham, S. Wyver
Abstract: The ability of school-age children who were visually impaired and their sighted peers to recognize faces was compared over seven tasks that were designed to detect both qualitative and quantitative differences between the two groups in this regard. Although no differences were found in the two groups' ability to identify entire faces, the visually impaired children were at a disadvantage when part of the face, especially the eyes, was not visible. In addition, whereas children with better visual acuity seem to discriminate faces on the basis of internal features, children with worse visual acuity seem to be dependent on hair and the contour of faces.
Abstract: Prototypes of motorized-focus telescopes (MFTs) and of a 4X auto-focus telescope (AFT) were constructed, and 22 users of hand-focus telescopes (HFTs) were trained to use them for near-distance and intermediate-distance tasks. Despite the lack of differences in performance with the MFT, AFT, and HFT, the subjects' ratings on 9 of 10 aspects of telescope performance were significantly higher for the AFT and MFT than for the HFT.
Reading and Aging
M. Myrberg, Ö. Bäckman, G. Lennerstrand
Abstract: This article reports on the results of a study of the reading proficiency of 3,200 visually impaired persons in Sweden (86 percent of whom were elderly) following training in the use of optical devices and a follow-up study of 5 percent of the sample three years later. After training, 95 percent of the original sample used optical aids as their preferred reading medium, 71 percent could read newsprint, and 50 percent read fluently. Three years later, there was a substantial drop in the number of patients using reading aids, although those who used them had become more proficient readers.
IN THIS ISSUE
C. Monte, F. Coco
Reviewed by D. Kent
R. Shen, M.M. Uslan
The Journal of Visual Impairment & Blindness (JVIB)--the international, interdisciplinary journal of record on blindness and visual impairment that publishes research and practice
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