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Purpose

To investigate the relationship between the functional visual acuity FVA and useful field of view UFOV in elderly drivers and assess the usefulness of the FVA test to screen driving aptitude in elderly drivers.

Methods

This study included 45 elderly drivers 31 men, 14 women; mean age, 68.1 years and 30 younger drivers 26 men, 4 women; mean age, 34.2 years who drive regularly. All participants underwent measurement of the binocular corrected distant visual acuity CDVA, binocular corrected distant FVA CDFVA, and Visual Field with Inhibitory Tasks Elderly Version VFIT-EV to measure UFOV. The tear function and cognitive status also were evaluated.

Results

The CDVA, the CDFVA, cognitive status, and the correct response rate CAR of the VFIT-EV were significantly worse in the elderly group than in the control group P = 0.000 for all parameters. The cognitive status was correlated significantly with the CDVA r = -0.301, P = 0.009, CDFVA r = -0.402, P = 0.000, and the CAR of the VFIT-EV r = 0.348, P = 0.002 in all subjects. The results of the tear function tests were not correlated with the CDVA, CDFVA, or VFIT-EV in any subjects. Stepwise regression analysis for all subjects in the elderly and control groups showed that the CDFVA predicted the CAR most significantly among the clinical factors evaluated.

Conclusion

The FVA test is a promising method to screen the driving aptitude, including both visual and cognitive functions, in a short time.



Autor: Kazuno Negishi , Sachiko Masui, Masaru Mimura, Yoshio Fujita, Kazuo Tsubota

Fuente: http://plos.srce.hr/



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