Effect of compensatory viewing strategies on practical fitness to drive in subjects with visual field defects caused by ocular pathology

A considerable proportion of subjects with visual field defects passed the driving test, before or after training. The level of compensatory viewing efficiency was significantly related to the likelihood to pass the on-road driving. Taking compensatory viewing efficiency (AFOV) into account improved the predictive power of a model based on the current vision requirements for driving. Yet,sensitivity and specificity remained low, limiting the use of these tests to distinguish between safe and unsafe drivers. A large percentage of drivers with visual field defects would be incorrectly restricted from driving on the basis of these tests. We therefore argue that for drivers with visual acuities as low as 0.1 or visual fields as small as 30 degrees a negative outcome on the vision tests should be followed by an on-road driving test.

	titlepages/contents
	chapter 1
	chapter 2
	chapter 3
	chapter 4
	chapter 5
	addendum
	introduction
	samenvatting
	summary
	thesis

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