a pilot evaluation of on-road detection performance by drivers with hemianopia using oblique peripheral prisms
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2012
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Abstract
Aims. Homonymous hemianopia (HH), a severe visual consequence of stroke, causes difficulties in detecting obstacles on the nonseeing (blind) side. We conducted a pilot study to evaluate the effects of oblique peripheral prisms, a novel development in optical treatments for HH, on detection of unexpected hazards when driving.
Methods. Twelve people with complete HH (median 49 years, range 29–68) completed road tests with sham oblique prism glasses (SP) and real oblique prism glasses (RP). A masked evaluator rated driving performance along the 25 km routes on busy streets in Ghent, Belgium.
Results. The proportion of satisfactory responses to unexpected hazards on the blind side was higher in the RP than the SP drive (80% versus 30%; P=0.001), but similar for unexpected hazards on the seeing side.
Conclusions. These pilot data suggest that oblique peripheral prisms may improve responses of people with HH to blindside hazards when driving and provide the basis for a future, larger-sample clinical trial. Testing responses to unexpected hazards in areas of heavy vehicle and pedestrian traffic appears promising as a real-world outcome measure for future evaluations of HH rehabilitation interventions aimed at improving detection when driving.
| Reference Key |
bowers2012strokea
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|---|---|
| Authors | ;Alex R. Bowers;Mark Tant;Eli Peli |
| Journal | colloids and surfaces b, biointerfaces |
| Year | 2012 |
| DOI |
10.1155/2012/176806
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