Related Experiment Video
Updated: Aug 5, 2026
11:12
Driving Simulation in the Clinic: Testing Visual Exploratory Behavior in Daily Life Activities in Patients with Visual Field Defects
Published on: September 18, 2012
Vision impairment and older drivers: who's driving?
J E Keeffe1, C F Jin, L M Weih
1Centre for Eye Research Australia, University of Melbourne, Melbourne, Vic, Australia. jillek@unimelb.edu.au
The British Journal of Ophthalmology
|September 18, 2002
Summary
Drivers with impaired vision are not more likely to have accidents, but older drivers do restrict driving in challenging conditions. Many with vision impairment continue to drive.
Area of Science:
- Ophthalmology
- Public Health
- Transportation Safety
Background:
- Impaired vision is a potential risk factor for driving safety.
- Understanding the relationship between vision and driving behavior is crucial for public health and policy.
Purpose of the Study:
- To investigate the association between impaired vision and driving cessation, driving restrictions, and motor vehicle accidents.
- To determine if drivers with visual acuity below the legal driving limit are at higher risk of accidents.
Main Methods:
- A population-based study involving interviews and comprehensive ophthalmic examinations of participants aged 44 and over.
- Stratified random cluster sampling was used in the Melbourne Statistical Division.
- Analysis focused on the association between legally prescribed visual acuity (<6/12) and driving outcomes.
Main Results:
- No increased likelihood of self-reported driving accidents was found for drivers with impaired vision compared to those with good vision.
- Older drivers with impaired vision were more likely to restrict driving in visually demanding situations than younger adults.
- 2.6% of current drivers had vision below the legal requirement for a driver's license; accident risk increased with distance driven, not age.
Conclusions:
- Impaired vision was not associated with a higher likelihood of driving accidents.
- While some drivers with impaired vision reduce or cease driving, a significant number continue to drive, particularly older adults who self-restrict in adverse conditions.
Related Concept Videos
01:25Glaucoma: Overview
Glaucoma is an eye condition characterized by increased intraocular pressure that damages the retina and optic nerve, leading to irreversible blindness if left untreated. The human eye has various components, including the cornea, iris, pupil, lens, and optic nerve. Aqueous humor is secreted by the epithelium of the ciliary body in the posterior chamber and flows through the trabecular meshwork and canal of Schlemm, maintaining normal intraocular pressure. The trabecular meshwork and the canal...
01:16Focusing of Light in the Eye
Light rays enter the eye through the cornea, a transparent dome-shaped tissue that is the eye's outermost layer. The cornea bends or refracts, light rays traveling to the pupil. The shape of the cornea determines how much of the light is bent and whether the image will be focused correctly on the retina at the back of the eye. Once the light has passed through both refraction layers, it converges into a single focal point onto a small area. This is where photoreceptors start transforming...
01:22Photoreceptors and Visual Pathways
At the molecular level, visual signals trigger transformations in photopigment molecules, resulting in changes in the photoreceptor cell's membrane potential. The photon's energy level is denoted by its wavelength, with each specific wavelength of visible light associated with a distinct color. The spectral range of visible light, classified as electromagnetic radiation, spans from 380 to 720 nm. Electromagnetic radiation wavelengths exceeding 720 nm fall under the infrared category, whereas...
01:12Visual Agnosia
Visual agnosia is a condition characterized by the inability to recognize visually presented objects despite having normal vision. For instance, a person with visual agnosia can describe the shape and color of an object but cannot identify or name it. This impairment does not affect their visual field, acuity, color vision, brightness discrimination, language, or memory. An example of this condition in a social setting is someone at a dinner party asking for "that silver thing with a round end"...
01:29Sight Distance in a Vertical Curve
Sight distance on vertical curves is critical in roadway design. It ensures drivers can see far enough ahead to identify and respond to hazards effectively. This directly impacts safety, driver comfort, and the overall efficiency of the transportation network.Vertical curves are classified into crest and sag curves based on their geometry. For crest curves, sight distance is determined by the line of sight between a driver's eye and a small object on the road's surface. Design parameters for...
01:27Diabetic Retinopathy
DefinitionDiabetic retinopathy is a microvascular complication of diabetes affecting the retinal blood vessels.Risk FactorsDiabetic retinopathy is present in almost all individuals with type 1 diabetes and more than 60% of those with type 2 diabetes after two decades of disease.The risk increases with poor glycemic control, hypertension, dyslipidemia, smoking, pregnancy, and puberty.Although cataracts and glaucoma are also more frequent in people with diabetes, retinopathy remains the leading...