This article reports the measurement of the "veering tendency" of 4 blind pedestrians over 3 15-trial test sessions. Findings illustrate between-subject and within-subject differences in patterns of veering, and the implications of these differences for orientation and mobility instruction are discussed. (Author)

Travelers with visual impairments and orientation and mobility (O&M) instructors were assessed in their performance of the two-point touch cane technique. Both groups deviated similarly from classical stipulations of the technique, having wider arc widths and hand positions off of midline. Measures of body coverage and rhythm were less than ideal.…

An objective evaluation of the Sonic Pathfinder, a new ultrasonic mobility aid, showed that use of the aid changes mobility in many ways. Reduced perception of environmental sounds was not reflected in performance. The majority of users traveled slowly and exhibited less than optimal strategies. (Author/CL)

Four groups (sighted, blindfolded sighted, legally blind, and blind) of adults were trained to traverse a five-block route in a residential neighborhood and were then asked to reconstruct the route from memory. Results showed the blind and sighted adults demonstrated similar abilities to learn routes but showed significant differences in memorial…

A travel cane was adapted for use by a 10-year-old boy with cortical blindness, severe mental retardation and cerebral palsy affecting his left arm and leg. The Specific Adaptation Mobility Cane utilizes the affected arm to hold the cane while leaving the other hand free for trailing walls, opening doors, carrying objects, and holding handrails.…

This article reviews research on the biomechanical elements related to the most commonly used long cane technique, the two-point touch, by individuals with blindness or low vision. The use of several natural biomechanical tendencies supports the contention that the technique is inherently efficient. (Contains references.) (Author/DB)

Retinitis pigmentosa is a rod-cone dystrophy, commonly genetic in nature. Approximately 60-80% of those with retinitis pigmentosa inherit it by an autosomal recessive transmission (Brilliant, 1999). There have been some reported cases with no known family history. The symptoms of retinitis pigmentosa are decreased acuity, photophobia, night…

The article describes a curriculum for the visually handicapped which provides instruction in the four basic facets of landmark travel. The concepts included in the curriculum are: (1) learning the concept of landmarks, (2) remaining oriented to landmarks, (3) following direction based on landmarks, and (4) giving verbal directions based on them.…

This study evaluated the ability of 40 blind adults to spatially organize large outdoor places using a verbal response survey and a near space lapboard task. The study found a high correlation between performances on the large outdoor environment with and without sighted guide tasks. The lapboard task also predicted performance in the outdoor…

These articles present different perspectives on the eligibility of persons with visual or other disabilities to teach orientation and mobility skills to individuals with visual impairments. Arguments in favor note that they understand their clients' perspective in the learning process; commentators opposed argue that their safety has not been…

This article proposes an approach to teaching street crossing to students who are visually impaired that considers the risks, ambiguity, and complexity of today's intersections. Thirty or 40 years ago, street crossing was a straightforward task for travelers with visual impairments (that is, those who are blind or have low vision). The…

Some aspects of assistive technology can be enhanced by the application of virtual reality. Although virtual simulation offers a range of new possibilities, learning to navigate in a virtual environment is not equivalent to learning to navigate in the real world. Therefore, virtual reality simulation is advocated as a useful preparation for…

The authors discuss the establishment of a program at a state university that prepared teachers of the visually impaired (TVI) and orientation and mobility (O&M) specialists using distance education and intensive, face-to-face instruction. The authors evaluated the self-assessed competencies of 8 participants who completed prescribed TVI and…

The article describes adaptive techniques used to evaluate and teach mobility to the physically handicapped blind individual, with emphasis on users of wheelchairs and walkers. The use of electronic travel aids is discussed, and a system is designed by the authors to mount the Mowat Sensor to a walker is described. (Author/CL)

An orientation and mobility curriculum for multiply handicapped deaf students incorporates instruction in environmental awareness concepts, orientation reference systems, route planning, and auditory training. Instruction frequently includes a solo travel experience. The roles of the classroom teacher and of the mobility instructor are noted. (CL)