TABLE 1.

European Union visual acuity requirements and comparison of the requirements among selected European countries according to the degree of deviation.

	EU directive (2006/126/EC)	At least 0.5 binocular (with or without correction)
Countries with a small deviation or the same conditions as the EU directive	Hungary	At least 0.5 binocular, if the person is monocular, it must be at least 0.5 (with or without correction)
	Austria	At least 0.5 binocular (with or without correction)
	Slovenia	At least 0.5 binocular (with or without correction)
	France	At least 0.5 binocular, if the person does not see on one eye or the acuity on this one is less than 0.1, it must be at least 0.5 on the other (with or without correction)
	Croatia	At least 0.6 binocular, at least 0.2 on the worse eye, the difference between them should not be bigger than 3D (with or without correction)
	Switzerland	At least 0.5 on the better eye, at least 0.2 on the worse eye, if the person is monocular, the acuity must be at least 0.6 (with or without correction)
	Denmark	At least 0.5 binocular (with or without correction)
Countries with a marked deviation from the EU directive -in the stricter direction:	Italy	At least 0.7 binocular, at least 0.2 on the worse eye, the difference among them should not be bigger than 3D (with or without correction)
	Germany	First, the visual acuity is checked, which must be at least 0.7 binocular, if this is not possible, a more extensive ophthalmological examination is done, where the visual acuity must be at least 0.5 binocular (with or without correction)
Countries with marked deviation from the EU directive -in less strict direction:	The Netherlands	Candidates complete the Health Declaration questionnaire before taking the exam and upon extension. If they indicate that they have certain vision problems, they must undergo an ophthalmological examination, where the acuity must be at least 0.5 binocular (with or without correction). The driving test starts with reading a license plate of the car at the 25 m distance (requiring visual acuity around 0.7). If one fails this test, one needs to undergo ophthalmological examination.
	United Kingdom	At the beginning of the practical part of the exam, one must read the license plate from 20 m. If one fails, obligatory ophthalmological examination follows, where the visual acuity must be at least 0.5 binocular (with or without correction)
	Iceland	Opportunity to self-certify that no visual impairment is present. If not, visual functions are not tested. If there are problems, same criteria as in EU directive are used.
	Norway	Opportunity to self-certify that no visual impairment is present. If not, visual functions are tested at the driver’s test by reading a road sign at 20 m distance.
	Sweden	If nystagmus is present, visual acuity has to be of 0.5 when the head is turned 30°.

EU, European Union; D, diopter.