Figure 2.

Simulated view of a road for a driver with bitemporal hemianopia. (a) When fixating far down the road the view is not affected (assuming orthophoria). (b) When the driver fixates on the high-mounted speedometer here, the posterior volume scotoma eliminates much of the relevant road view. The images were created using a 3D model of the scene, cutting out a wedge in (b) and joining the edges. Blur was added to indicate defocus away from fixation/accommodation distance. In both cases, the driver generally does not notice the blur.