Wilkinson Mark E, McGehee Daniel V
Colleges of Engineering and Medicine, University of Iowa, Iowa City, Iowa *
Optom Vis Sci. 2019 Feb;96(2):130-132. doi: 10.1097/OPX.0000000000001326.
This work challenges the standard of the past 40 years, which required the use of a bioptic telescope by individuals with vision loss wanting to be licensed to drive in most states in the United States.Driving continues to be the key to independence for many individuals, particularly older drivers who live in an area where public transportation is limited or nonexistent. For the past 40 years, the most frequently option to allow drivers who are visually impaired to maintain driving privileges was to require them to use a bioptic telescope. Bioptic telescopes were felt to be necessary for wayfinding when driving. In addition, it was thought that a person could look through a bioptic telescope and still be aware of the driving environment around him/her. Human factor research has shown that the assertion that an individual can attend to two tasks simultaneously is not possible. Taking one's eyes off the road for as little as 2 seconds can lead to lane position breakdown. In 2018, wayfinding can now be more easily accomplished with the use of ubiquitous technologies like Global Positioning System systems on our telephones and in our cars. Driver distraction principles support safer alternatives to bioptic telescopes because these audio options allow the drivers to maintain their eyes and their attention on the road and the traffic around them. The switching of view within the bioptic spectacles is attentionally demanding, and the visual field restriction of such devices reduces overall situation awareness by narrowing the driver's attention.
这项工作挑战了过去40年的标准,在美国大多数州,视力受损者若想获得驾驶执照,过去的标准要求他们使用双目望远镜。对于许多人来说,开车仍然是实现独立的关键,尤其是那些居住在公共交通有限或根本没有公共交通的地区的老年司机。在过去40年里,允许视力受损的司机保留驾驶特权的最常见选择是要求他们使用双目望远镜。人们认为双目望远镜在开车时用于导航是必要的。此外,人们认为一个人可以透过双目望远镜看东西,同时仍然能够感知其周围的驾驶环境。人为因素研究表明,一个人不可能同时专注于两项任务。眼睛离开道路哪怕只有2秒钟,都可能导致车道位置失控。在2018年,如今借助我们手机和汽车中无处不在的全球定位系统等技术,导航可以更容易地实现。驾驶员分心原则支持采用比双目望远镜更安全的替代方案,因为这些音频选项能让司机将眼睛和注意力保持在道路及周围的交通状况上。在双目眼镜内切换视野需要注意力高度集中,而且此类设备的视野限制会通过缩小司机的注意力范围而降低整体态势感知能力。