Good vision is necessary for safe driving. Actually, safety on the road relies on several different visual capabilities such as being able to see both far ahead as well as your immediate surroundings, peripheral vision, night vision and color vision, among many others.
Strong distance vision is very important because of how it helps you to evaluate the road ahead of you and see any danger that might come up. Most importantly, it gives you more time to respond quickly and stop accidents that might have otherwise taken place. And on the flip-side, if you don't see ahead well then there's a chance you may not see the hazards in time to prevent an accident.
Distance vision is also directly related to the maintenance of your windshield and glasses (including sunglasses), so ensure these are clean and free of both dust and scratches which can inhibit your vision, specifically when it's dark or sunny.
Just as important is peripheral vision, which enables you see to the sides of your vehicle, which is important to see other cars, animals and pedestrians without needing to even glance away from the road ahead. Being able to see peripherally is also important when you're switching lanes and making turns. Maximize use of your rearview and side mirrors. Make sure they're well-positioned, to enhance your side vision.
Road safety is also highly dependent on good depth perception. This allows you to measure distances properly in dense traffic, change lanes and overtake other vehicles on the road. Good depth perception requires adequate sight in both of your eyes. If you've lost visual acuity in one eye, it's essential to consult with an optometrist to determine whether it is safe for you to get behind the wheel. It may be suggested that you refrain from driving until your vision is corrected to achieve proper depth perception.
Near vision focusing or being able to accommodate effectively also comes into use when driving. This is the capability to move your focus from something far to something near, for example, from the road to the speedometer. If you're over the age of 45 you may have increasing difficulty with near vision, and you might need glasses or some other vision correction solution to make it easier to see your dashboard. Call your eye doctor to discuss the best option.
At the first sign of a vision problem, consider how it affects your ability to drive. You can't afford to endanger your life or those of the others on the road! If you think your vision isn't up to par, visit your eye doctor, and have a proper eye exam right away.