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Letters |

Central Visual Field Loss and Driving—Reply

P. Matthew Bronstad, PhD; Alex R. Bowers, PhD; Amanda Albu, BA; Robert B. Goldstein, PhD; Eli Peli, MSc, OD
JAMA Ophthalmol. 2013;131(6):819-821. doi:10.1001/jamaophthalmol.2013.4259.
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Desapriya and colleagues commented on our use of simulation in evaluating detection performance of drivers with CFL. Although driving assessments using open-road courses have high face validity, such studies are limited by the inability to control whether, when, and where hazards appear.14 By comparison, a high-fidelity driving simulator, such as the one used in our study,5 provides a safe, controlled environment in which to conduct much-needed studies to evaluate the effects of different types and levels of vision impairment on driving performance.58 Using a driving simulator, we have been able to repeatedly evaluate detection of potential pedestrian hazards under exactly the same conditions for all participants in a manner that is impossible in an on-road study1 (even using a closed-road course). In the prior on-road study of drivers with “mild” central field loss (CFL)3 that Desapriya and colleagues noted, there were only 2 stunt actor appearances per driver compared with 104 pedestrian appearances per participant in our driving simulator study.


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June 1, 2013
Ediriweera Desapriya, PhD; D. Sesath Hewapathirane, PhD; Ian Pike, PhD
JAMA Ophthalmol. 2013;131(6):819-821. doi:10.1001/jamaophthalmol.2013.434.
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