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Related Experiment Video

Updated: Oct 16, 2025

Driving Simulation in the Clinic: Testing Visual Exploratory Behavior in Daily Life Activities in Patients with Visual Field Defects

Driving Simulation in the Clinic: Testing Visual Exploratory Behavior in Daily Life Activities in Patients with Visual Field Defects

Published on: September 18, 2012

Self-reported driving difficulty in patients with bilateral cataract.

Mohd Harimi Abd Rahman¹, Haliza Abdul Mutalib², Nurul Hafizah Mohd Norizan³

¹Optometry and Vision Sciences Program, Center for Rehabilitation and Special Needs Studies (iCaRehab), Faculty of Health Sciences, Universiti Kebangsaan Malaysia, Jalan Raja Muda Abdul Aziz, 50300 Kuala Lumpur, Malaysia.

Journal of Optometry

|October 22, 2021

Summary

Bilateral cataract significantly impacts driving ability, particularly at night and in rain, correlating with reduced contrast sensitivity. Comprehensive eye exams are crucial for older drivers to ensure road safety.

Keywords:

Cataract Driving performance Eye care Visual impairment Visual status

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Area of Science:

Ophthalmology
Optometry
Gerontology

Background:

Cataract surgery is a common procedure to restore vision.
Cataracts impair visual acuity and contrast sensitivity, affecting daily activities.
Driving is a critical daily activity for many older adults.

Purpose of the Study:

To investigate self-reported driving difficulty in patients with bilateral cataract.
To assess the relationship between visual functions (visual acuity and contrast sensitivity) and driving difficulty.

Main Methods:

A cross-sectional study included 99 participants aged 50+ with bilateral cataracts and regular driving habits.
Participants completed the self-reported Driving Difficulty Questionnaire.
Visual functions including visual acuity and contrast sensitivity were measured.

Main Results:

Most participants reported difficulty driving at night (85.9%) and in rain (73.7%).
Driving difficulty showed a significant positive correlation with contrast sensitivity (rs=0.40, p=0.03).
No significant correlation was found between driving difficulty and visual acuity (rs=-0.14, p=0.17).

Conclusions:

Bilateral cataract significantly affects driving performance, especially under low-light or low-contrast conditions.
Reduced contrast sensitivity is a key factor contributing to driving difficulties in cataract patients.
Mandatory comprehensive eye examinations for older drivers are recommended for road safety.