Did you know that 90% of the information you need to drive with led bulb receives it through sight? As long as autonomous cars do not arrive, vision is essential as it forced to adapt quickly to an environment that, due to speed, changes faster than in normal conditions. If an eye problem added to this situation, the result is the decrease in no less than six million Spaniards.
Despite the importance of vision while driving, 25.7% of Spaniards between 18 and 30 have never undergone a visual exam. That is why it is advisable to perform annual ophthalmological examinations to detect any problem. Any ocular alteration or disease can increase the risk of suffering a road accident.
The CEA Foundation (European Automobile Commissioner) ensures that drive a vision of quality rather than quantity is required. It should be that the reaction time since the object is detected is as short as possible, that there is greater visual acuity. Below we summarize in five points the issues that you should take into account:
Light-eyed people are especially sensitive to light because their amount of melanin in the iris is less. An Austrian investigation published last year found that blue-eyed people had significantly higher levels of diffuse intraocular light. This result could cause glare more frequently, so they should be more careful when it comes to.
Driving at night means driving the vehicle in conditions that are not optimal for vision. The proportion of fatal accidents increases significantly during the night, among other things because visual acuity is reduced by 70%, and the sense of depth is seven times lower (our ability to detect objects and their distance reduced. This result is not surprising that 86% of Spaniards prefer to travel by day compared to 13% who opt for the night.
That risk is even greater in people over 50 years. According to a study by the Applied Vision Research Group of the Complutense University, the halo that surrounds the light source at night (such as headlights and street lamps) enlarges as the eye ages and makes it difficult to see the objects behind it.
If adverse weather conditions added to it, the viewing capacity will not be optimal, much less, so every precaution will be low: moderate the speed, more attention to the road.
Speed is a very frequent cause of road mortality. The greater the speed, the faster things happen. Maintaining a speed between established limits helps you have more time to react. It’s not about looking at one point too long, but looking at many points long enough to notice the situation.
According to an official College of Opticians-Optometrists report, the visual field reduced, up to 75 degrees, as the speed increases while driving. This result is called the kinetic field of vision. At about 35 km / h, the field of view is 100 degrees, but if we increase the speed to 100 km / h, it reduced by 30 degrees.
Influence of alcohol
It is one of the factors that most affect the vision, in addition to the incoordination of movements, errors of perception, drowsiness… Regarding the vision, there are several specific effects:
- Reduce visual acuity.
- It can cause double vision.
- Errors in the distance calculation
- It reduces the visual field.
According to a study by the Rementería Foundation, although it is people with light eyes and those over 50 who have greater sensitivity to light, 70% of drivers suffer from driving flashes. “The sunset hours are the ones that register the most traffic accidents, especially in autumn, which we attribute to a large extent to the effect of glare produced directly by the sun, after the departure of
For that reason, it is key to choose well ones, betting on polarized glasses . Especially people with vision disorders, such as farsightedness, astigmatism, myopia, or glaucoma. In these cases, the period of adaptation of the pupil increases and with it the risk of an accident.
In adverse atmospheric conditions such as rain or fog, not only the vision is reduced, but the light of the car headlights is reflected in the water and creates a mirror sensation that can be very dangerous. It should also bear in mind that the higher the solar radiation is higher and, especially, in the presence of snow (which reflects 85 percent of the light). If you perceive that glare is very common, it is best to go to the ophthalmologist, as it could be a symptom of a vision disorder and cause an accident.