Night Vision Aid Option: Streamlights

1986 ◽  
Vol 80 (10) ◽  
pp. 1005-1006
Author(s):  
V. L. Mosler
Keyword(s):  
Visually Impaired ◽  
Night Blindness ◽  
Night Vision ◽  
Wide Angle ◽  
School Aged Children ◽  
Hands On ◽  
Visually Impaired Persons

Other authors have compared commercially available night vision aids used by visually impaired persons who have night blindness. The Wide Angle Mobility Lantern (WAML) is usually the more recommended device. This article suggests that other night vision aids, as yet unmentioned in the literature, may be equally effective and sometimes preferred to the WAML. Lights in the Streamlight series are comparable in price and size to the WAML and are more widely available. Personnel working with school-aged children who are night blind are encouraged to provide them with information about, and hands-on experience with, various night vision aids.

The Night Vision Aid for Legally Blind People with Night Blindness: An Evaluation

1983 ◽  
Vol 77 (2) ◽  
pp. 67-70 ◽  
Author(s):  
Diane L. Morrissette ◽  
Gregory L. Goodrich
Keyword(s):  
Night Blindness ◽  
Night Vision ◽  
Blind People ◽  
Wide Angle ◽  
Additional Information ◽  
Orientation And Mobility ◽  
Mobility Aid ◽  
Measures Of Performance

The Night Vision Aid (NVA) was evaluated to determine its effectiveness as an orientation and mobility (O&M) aid for legally blind people with night blindness. Twenty-four subjects walked a prescribed route during the day and at night without the NVA, and also at night with the NVA. They also walked a different route using the Wide Angle Mobility Light (WAML) to provide additional information on a second night mobility aid. Measures of performance are described. On the average, the NVA did not significantly improve the subjects’ mobility at night; the majority of them preferred the WAML.

Evaluation of Two Night–Vision Devices

1990 ◽  
Vol 84 (10) ◽  
pp. 539-541
Author(s):  
J. Robinson ◽  
S.M. Story ◽  
T. Kuyk
Keyword(s):  
High Intensity ◽  
Night Blindness ◽  
Visual Impairments ◽  
Visual Fields ◽  
Night Vision ◽  
Wide Angle ◽  
Blind Individuals ◽  
High Intensity Light

Night-blind individuals often have restricted visual fields or other visual impairments that limit their ability to travel at night. The study reported here compared two night-vision devices: one wide-angle light and one with a high-intensity beam. It concluded that no one night light is best for all individuals and that depending on the cause of the night blindness, a smaller angle, high-intensity light may be more useful than a wider angle one.

A Study of the Effectiveness of the Wide Angle Mobility Light

1985 ◽  
Vol 79 (3) ◽  
pp. 109-111 ◽  
Author(s):  
Diane L. Morrisette ◽  
Gregory L. Goodrich ◽  
Michael F. Marmor
Keyword(s):  
Night Blindness ◽  
Visual Fields ◽  
Error Rates ◽  
Night Vision ◽  
Wide Angle

The Wide Angle Mobility Light (WAML) is a commercially available night vision aid. The present study tested the effectiveness of the device in helping night-blind subjects walk a course of residential streets at night. It was found that the WAML significantly reduced error rates ( p< .05). The results suggest that the WAML can be a useful device for most individuals who have night blindness with constricted peripheral visual fields.

scholarly journals Information Technology and Transcription of Reading Materials for the Visually Impaired Persons in Nigeria

2017 ◽  
Vol 7 (1) ◽  
pp. 42 ◽  
Author(s):  
Christopher Nkiko ◽  
Morayo I. Atinmo ◽  
Happiness Chijioke Michael-Onuoha ◽  
Julie E. Ilogho ◽  
Michael O. Fagbohun ◽  
...  
Keyword(s):  
Information Technology ◽  
Technology Use ◽  
Visually Impaired ◽  
Modern Information Technology ◽  
Ex Post ◽  
Reading Materials ◽  
Ex Post Facto ◽  
Information Materials ◽  
Corporate Social ◽  
Visually Impaired Persons

Studies have shown inadequate reading materials for the visually impaired in Nigeria. Information technology has greatly advanced the provision of information to the visually impaired in other industrialized climes. This study investigated the extent of application of information technology to the transcription of reading materials for the visually impaired in Nigeria. The study adopted survey research design of the ex-post facto to select 470 personnel as respondents. A questionnaire titled Information Technology Use Scale (α=0.74), and Interview Schedule (α=0.75), were used. Data were analyzed using descriptive statistics and Pearson Product Moment Correlation. The findings indicate that information technology in transcription was low and a significant positive relationship between application of information technology and transcription of information materials (r=0.62: p<0.05). The study recommended among others that Multi-National Corporations should be sensitized to extend their Corporate Social Responsibility (CSR) activities to help in procuring modern information technology devices and software to enhance transcription.

scholarly journals Substantial restoration of night vision in adult mice with congenital stationary night blindness

2021 ◽  
Author(s):  
Juliette Varin ◽  
Nassima Bouzidi ◽  
Gregory Gauvain ◽  
Corentin Joffrois ◽  
Melissa Desrosiers ◽  
...  
Keyword(s):  
Night Blindness ◽  
Night Vision ◽  
Congenital Stationary Night Blindness ◽  
Adult Mice

scholarly journals A Survey on Mathematical Software Tools for Visually Impaired Persons: A Practical Perspective

IEEE Access ◽  
2021 ◽  
pp. 1-1
Author(s):  
Paul Mejia ◽  
Luiz Cesar Martini ◽  
Felipe Grijalva ◽  
Julio Cesar Larco ◽  
Juan Carlos Rodriguez
Keyword(s):  
Visually Impaired ◽  
Software Tools ◽  
Mathematical Software ◽  
Visually Impaired Persons

scholarly journals Conveying facial expressions to blind and visually impaired persons through a wearable vibrotactile device

PLoS ONE ◽  
2018 ◽  
Vol 13 (3) ◽  
pp. e0194737 ◽  
Author(s):  
Hendrik P. Buimer ◽  
Marian Bittner ◽  
Tjerk Kostelijk ◽  
Thea M. van der Geest ◽  
Abdellatif Nemri ◽  
...  
Keyword(s):  
Facial Expressions ◽  
Visually Impaired ◽  
Blind And Visually Impaired ◽  
Visually Impaired Persons

Computerized Image Enhancement for Visually Impaired Persons: New Technology, New Possibilities

1986 ◽  
Vol 80 (7) ◽  
pp. 849-854
Author(s):  
E. Pell ◽  
L. E. Arend ◽  
G. T. Timberlake
Keyword(s):  
Image Enhancement ◽  
Visually Impaired ◽  
Transfer Functions ◽  
Spatial Scales ◽  
New Technology ◽  
Age Related ◽  
Visual Degradation ◽  
The Individual ◽  
Visually Impaired Persons ◽  
Made In

Patients with age-related visual loss suffer reduced ability to recognize faces and other scenes in photographs and on television. Recently, progress has been made in image enhancement, using controlled distortion of digitally stored images that increases their usefulness in particular applications. Described are two approaches to image enhancement for the visually impaired. In one approach, the visual losses that characterize individual patients and disease classes are described using detailed measurements of visual degradation transfer functions, which are profiles of loss of image information at various spatial scales. The particular distortion used for image enhancement is then adjusted to the impairment of the individual patient or disease class. A second approach takes advantage of the resemblance between the visual losses of many patients and the degradation of picture information in other applications due to external limitations (e.g., fog and haze) on photography. Several enhancement algorithms have been found useful with such images and may also improve picture recognition by the visually impaired.

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