At night, the light is dim, the line of sight is not good, coupled with myopia and other reasons, it is easy to cause blurred line of sight, so what should I do when driving? What causes blurred vision? Let's have a look!
Reasons for blurred vision when driving at night
Mild or moderate myopia has no other symptoms except blurred distant objects. When working close, you can see small targets without adjustment or with less adjustment, but feel convenient. However, in high myopia, the target distance is very close when working, and the two eyes are too inward, which will cause excessive use of internal rectus muscle and visual fatigue.
After working close for a long time, you can have blurred handwriting or goals, dry eyes, heavy eyelids, fatigue, and eye pain and headache. After a short rest, the symptoms are significantly reduced or disappear. This kind of symptoms are generally the most common in the afternoon and evening, and even bad heart and vomiting. Sometimes, it can be complicated with repeated attacks of chronic conjunctivitis, blepharitis or wheat swelling.
The visual acuity of hyperopia is determined by its hyperopia diopter and the strength of accommodation. Mild hyperopia can be overcome with a small part of accommodation. Both far and near vision can be normal and generally asymptomatic. Such hyperopia is called recessive hyperopia. For slightly heavier hyperopia or those with less accommodation, both far and near vision are poor, The remaining part that can not be fully compensated by regulation is called dominant hyperopia, and the total combination of recessive hyperopia and hyperopia is called total hyperopia. Hyperopia is prone to visual fatigue because it is in a state of tension for a long time.
Those with low diopter may be asymptomatic, and those with slightly higher astigmatism may have decreased vision. They can't see far and near clearly. They seem to have double shadows, and often have visual fatigue symptoms.
What about blurred vision when driving at night
1. Eat more foods rich in vitamin C, such as all kinds of fresh vegetables and fruits, such as apples. Foods containing vitamin A are also good for the eyes, such as carrots, amaranth, spinach and oranges and apricots in fruits.
2. Usually rest more, don't use your eyes too much, and protect your eyes. Keeping good working and living habits is an effective means to prevent dry eyes. Drive less, watch less TV and computer, and see if your eyesight can recover after rest.
3. You can protect your eyes by cherishing or moisturizing.
4. Soft lights that can provide light and shade contrast should be used. Do not use electric lights that directly reflect light to people's eyes.
5. You can wear night driving glasses, which are suitable for driving at night, in fog, cloudy and rainy days and outdoor sports. After wearing, you can effectively enhance the brightness of color, make the surrounding scenery brighter and clearer, and drive safer.
6. Try to avoid driving at night, especially non high-speed long-distance.
7. Many novices are not used to the use of lights at night. The main problem is the use of low beam lights and high beam lights. Many novices turn on the high beam lights, which has an impact on cars coming from the opposite side. Therefore, we must look at the indicator lights on the screen and choose the lights.
8. Try to avoid overtaking at night. When it is necessary to overtake, continuously change the far and near lights to inform the front vehicle in advance. Overtake after it is determined that the front vehicle gives way and is allowed to overtake.
9. In the evening, due to poor vision, you should pay attention to increasing the radian when turning. Don't turn too fast. The speed should be slow. It's better to turn left more.
10. When changing lanes at night, you must turn on the turn signal in advance. You must not turn the steering wheel suddenly to change lanes, which is easy to bring danger.
11. When driving at night in summer, be particularly vigilant. The weather is hot in summer. People often enjoy the cool or sleep in the open on both sides of the street or highway, especially near the residential area.
12. Driving at night, especially after midnight, is most prone to fatigue and drowsiness. In addition, driving at night can't see the landscape on both sides of the road and has little excitement to the driver. Therefore, it is most likely to cause main driver fatigue. If you feel a little, you should cheer up or stop for a rest.
13. When the driver drives at night, one is poor vision. Second, in case of danger and emergency, the driver must be ready to stop at any time. In this case, in order to avoid danger, pay attention to appropriately increase the following distance to prevent collision between front and rear vehicles.
14. When driving at night, pay attention to pedestrians crossing the road from the left. In the busy sections of urban roads, sometimes the opposite lanes are full of cars waiting for red lights. In this case, pedestrians often run out of the gap between the motorcades and cross the road from left to right.
15. In case of opposite vehicles during night driving, don't step on the brake pedal for a while and turn the wheel to the right. Pay attention to the pedestrians and bicycles on the right. When it is 150m away from the opposite vehicle, the high beam shall be changed to the low beam. If the other party does not use the low beam, it shall immediately slow down and continuously use the method of changing the far and low beam to indicate the other party. If it still doesn't change, you should slow down and stop to the right to avoid. Don't fight with strong light, so as not to damage the vision of both sides and cause a car accident.