Proper vision is required for road safety. Actually, driving safely requires several different visual abilities like the ability to see both near and far ahead, peripheral vision, seeing in limited light and color vision, plus many others.
Being able to see well into the distance is crucial because it allows you to evaluate the road in front and spot any dangerous things that might appear. Being able to see ahead gives you a chance to act fast and avoid any accidents. And on the flip-side, if you don't see ahead well you may not be able to see hazards soon enough.
Distance vision is also directly related to the state of your glasses and windshield, so make sure they are kept very clean and scratch-free which can reduce your vision, especially at night and on bright days.
You also need peripheral vision, which allows you see the sides of your vehicle, which is necessary to spot other cars, animals and pedestrians without having to even glance away from the road ahead. Being able to see peripherally is also crucial for switching lanes and making turns. Maximize use of both your rearview and side mirrors. Ensure they're angled properly, to assist your side vision.
Road safety is also highly dependent on good depth perception. This lets you judge distances properly in crowded driving conditions, switch lanes and overtake other cars. Accurate depth perception calls for proper functioning in both of your eyes. If you've lost visual acuity in one eye, it's essential to check with your eye doctor to determine if 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 instantly also plays an important role when driving. Accommodating is the capability to move your focus from something in the distance to something near, such as from the distance ahead of you to the dashboard. For those 45 or older you may have trouble with near vision, and it might be helpful for you to get reading glasses or some other corrective device to make it easier to see objects up close. Call your eye doctor to talk about the best option.
Color vision is also pretty important in the car. Drivers must be able to instantly identify traffic lights, street signs and hazard signals. For those with color blindness, your reaction time might be a little slower than normal. If this sounds familiar, try not to use medium or dark colored sunglasses, because these can seriously interfere with your ability to identify colors.
Don't wait until you renew or apply for your driver's license to get your eyes checked. You can't afford to endanger your own life or those of the others on the road! If you think your eyesight isn't perfect, see your optometrist, and get a proper eye exam right away.