Cross-sectional study assessing the addition of contrast sensitivity to visual acuity when testing for fitness to drive.

ABSTRACT:

Objectives

The aim of this study is to quantify the importance of loss of contrast sensitivity (CS) and its relationship to loss of visual acuity (VA), driving restrictions and daytime, on-road driving evaluations in drivers aged 70+.

Design

A predictive cross-sectional study.

Setting

Volunteer participants to a drivers' refresher course for adults aged 70+ delivered by the Swiss Automobile Club in western Switzerland from 2011 to 2013.

Participants

162 drivers, male and female, aged 70 years or older.

Clinical predictors

We used a vision screener to estimate VA and the The Mars Letter Contrast Sensitivity Test to test CS.

Outcomes

We asked drivers to report whether they found five driving restrictions useful for their condition; restrict driving

SUBMITTER: Spreng L 

PROVIDER: S-EPMC5829587 | biostudies-literature | 2018 Jan

REPOSITORIES: biostudies-literature