Author Affiliations: Department of Pediatrics, Developmental Neurosciences and Child Health, BC Children's Hospital, Vancouver, British Columbia, Canada.
Using simulator testing, the study by Bronstad et al1 suggests that individuals with central visual field loss (CFL) are delayed in hazard detection while driving. While these findings are interesting, it is important to note that the study was conducted using driving simulators and had a relatively small sample size of 11 individuals per group. Indeed, as mentioned in the article, an on-road study found no apparent differences in reaction time between people with mild CFL and control subjects. Additional well-controlled trials with larger sample sizes are needed to conclusively address this issue and to further validate these results.
Desapriya E, Hewapathirane DS, Pike I. Central Visual Field Loss and Driving. JAMA Ophthalmol. 2013;131(6):819-821. doi:10.1001/jamaophthalmol.2013.434