TY  - JOUR
PY  - 2011//
TI  - Prevalence of impairment of visual function in European drivers
JO  - Acta ophthalmologica
A1  - van Rijn, Laurentius J.
A1  - Nischler, Christian
A1  - Michael, Ralph
A1  - Heine, Christian
A1  - Coeckelbergh, Tanja
A1  - Wilhelm, Helmut
A1  - Grabner, Gunther
A1  - Barraquer, Rafael I.
A1  - Van Den Berg, Thomas J. T. P.
SP  - 124
EP  - 131
VL  - 89
IS  - 2
N2  - PURPOSE: This study aimed to investigate the prevalence of impairment of visual function amongst European drivers. <br><br>METHODS: A total of 2422 drivers from five European countries underwent a battery of visual function tests, including tests for visual acuity (VA), visual field (VF), contrast sensitivity, straylight (glare sensitivity) and useful field of view (UFOV). Subjects belonged to the following age categories: 45-54 years; 55-64 years; 65-74 years, and ≥ 75 years. A group of subjects aged 20-30 years served as a reference group. <br><br>RESULTS were compared with current standards for the visual function of drivers in the EU. <br><br>RESULTS: Visual acuity in 0.5% of the younger group and 5.3% of the eldest group was below the standard required for driving. Visual acuity after proper refraction adhered to the standard in the majority of cases. Visual field results were below standard or questionable in 2.7% and 2.4%, respectively, of subjects in the eldest group. In this eldest group, impaired contrast sensitivity was present in 6.3%, increased glare sensitivity in 29.5% and impaired UFOV in 21.6% of subjects, but, as there are no standards for these criteria, the exact level of prevalence depends on the definition of impairment. <br><br>CONCLUSIONS: Prevalences of impairment of visual functions that are not included in current standards (particularly contrast sensitivity and glare sensitivity) are much higher than prevalences of functions that are included (VA and VF).<p /> <p>Language: en</p>
LA  - en
SN  - 1755-375X
UR  - http://dx.doi.org/10.1111/j.1755-3768.2009.01640.x
ID  - ref1
ER  -