GPS Usage in a Population of Low-Vision Drivers

Abstract

Since non-GPS users were significantly older than GPS users, it is likely that older participants would benefit from GPS technology training from their low-vision eye care professionals.

Low Vision and Driving

“…7,35,47 Recent studies identify the possibility of using current automobile technology systems (advanced driver assistance systems [ADAS]) as additional driving aids for those with low vision; studies using audible GPS systems are also promising. 40 Although BTS driving programs continue to be refined and improved, several concerns remain regarding BTS use for drivers with low vision. Training programs must address individual needs and assess additional options to promote success including using a sequential approach such as working in a clinical practice prior to introduction to a real-life passenger-in-car training.…”

“…For the purposes of driving, people look through the carrier lenses under the BTS mount for general driving-90% to 95% of the total driving time-and then look up into the miniature telescopic lens unit(s) using a simple synchronized head and eye vertical drop technique to discern detail, color, or activity. [29][30][31][32][33][34][35][36][37]40,41 The BTS permits the trained user a rapid interchange between spectacle and telescopic viewing within a second or two per fixation. 29,30 The use of the BTS provides information to the driver regarding object identification in the distance.…”

“…The BTS is positioned in the upper part of glasses with a person's prescriptive correction, often referred to as the carrier lens. For the purposes of driving, people look through the carrier lenses under the BTS mount for general driving—90% to 95% of the total driving time—and then look up into the miniature telescopic lens unit(s) using a simple synchronized head and eye vertical drop technique to discern detail, color, or activity 29–37,40,41. The BTS permits the trained user a rapid interchange between spectacle and telescopic viewing within a second or two per fixation 29,30.…”

“…Additional studies featuring BTS use in both naturalistic behind-the-wheel settings and simulators would be valuable, as would be an examination of how a BTS could function as a complement to current technology available in commercial vehicles 7,35,47. Recent studies identify the possibility of using current automobile technology systems (advanced driver assistance systems [ADAS]) as additional driving aids for those with low vision; studies using audible GPS systems are also promising 40…”

“…BTS training programs should feature use in a clinic prior to use as a passenger in a car before the initiation of behind-the-wheel training as a benefit to facilitate skill building. Experts recommend that BTS programs be assessed with naturalistic environments for greater success,8,31,40,45 as using naturalistic settings may increase the external validity using real-world driving behavior. Most drivers who exhibit moderate visual acuity loss and participate in BTS training demonstrate proficiency in road skills 36…”