When driving, the value of seeing properly can not be underestimated. Actually, safe driving relies on several different visual abilities such as the ability to see both near and far ahead, peripheral vision, seeing at night and color vision, plus many others.
Being able to see well into the distance is very important because it helps you to evaluate the road in front of you and spot any dangerous things that might appear. This gives you a chance to react early and prevent any accidents that might have otherwise taken place. On the other hand, if you don't see ahead well you may not be aware of the hazards until it's too late.
Distance vision is also affected by the condition of your windshield and glasses (including sunglasses), so ensure they are really clean and scratch-free which can inhibit your ability to see clearly, specifically when it's dark or sunny.
You also need peripheral vision, which enables you to see either side of your vehicle, which is necessary to see other cars, animals and pedestrians without having to look away from the road ahead. Strong peripheral vision is also important when switching lanes and making turns. Maximize use of your side and rearview mirrors. Check they're angled properly, to assist your side vision.
Road safety is also highly dependent on good depth perception. This helps you evaluate distances properly in dense driving conditions, change lanes and overtake other cars. Strong depth perception requires proper functioning in both eyes. In cases of people that have lost vision in one eye, it's essential to check with your eye doctor to see whether it is safe for you to drive. It may be suggested that you refrain from driving until your vision is corrected to achieve proper depth perception.
Accommodation also plays an important role when driving. Accommodating is the capability to move your focus from a view ahead to something in front of you, for example, from the distance ahead of you to the dashboard. If you're over the age of 45 you may have increasing difficulty with near vision, and it's normal to require reading glasses or some other corrective device to see objects up close. Make an appointment with your optometrist to discuss the best option.
It's best not to wait until you renew or get your driver's license to get your eyes checked. You never want to risk your life or those of others on the road! If you suspect your vision isn't perfect, see your eye doctor, and have a thorough eye exam as soon as you can.