Introduction
The ability of the driver to have good vision is an important part of driver fitness. The SA Optometric Association provides insight pertaining to the requirement for clear vision on the website www.saoa.co.za
Visual acuity
This is the ability to judge space and the relative distance between objects or between an object and the vehicle. Depth perception depends on good binocular vision, essential for judging whether a car can be passed safely in the face of oncoming traffic and when moving from one lane to another among moving vehicles.
This is the ability to focus and see clearly with both eyes, individually as well as together. With good acuity, you will see details very easily. In the case of drivers, it is particularly vital in identifying road signs, cyclists, pedestrians and animals. Peripheral vision This is the ability to see over a wider area without moving either the eyes or the head sometimes called "looking out of the corner of your eyes"....
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