It is clear to everyone that good vision in drivers is crucial for safe driving. According to the World Health Organization (WHO), 285 million of the world’s population has some form of visual impairment. Find out below what causes visual impairment and how much it affects driving.
World eyesight statistics
- 70% of drivers have a problem driving at night, in rain or fog.
- 39 million people are blind
- 90% of the visually impaired population lives in developing countries
- 20% of drivers do not have optimal vision
Causes of poor eyesight
- Vision examination is irregular
- Vision correction is often inadequate
- Purchase of so-called ready-made glasses in drugstores, discount stores
Examination of goodness of vision
An instrument for displaying test images is used, specially designed for fast and accurate verification of basic parameters of visual capabilities. This is because poor near vision does not greatly affect the safety and handling of the car itself. People who have poor near vision may have trouble looking at the vehicle’s dashboard.
In addition to the quality of vision, driving safety is affected by:
- Field of view
- Visual acuity Visual acuity at a distance is a basic test of visual function, and often unfortunately the only one.
- Contrast sensitivity Contrast sensitivity is the ability to distinguish the observed object from the background.
- Glare When a part of the retina of the eye is directly illuminated by a strong light source in the dark or twilight, glare occurs. In traffic, this usually means flashing headlights at night, by the reflection of the sun from a wet road or from wet glass.
- Perception of space Perception of space (estimation of relative distance of objects in space, three-dimensional vision) is of crucial importance in traffic.
Conclusion
Every driver should see the best they can, not the least legally permissible. Check your eyesight regularly. Wear glasses that will reduce glare due to strong light. Contact your doctor if you have poor eyesight and look for the right diopter.
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