It is true that human’s eye can accept some limited range of light and create an image on the retina. But, there are many animals and birds who can see in the night clearly. However, all countries have competed to develop their technology in different ways which help to reduce human efforts with high speed and with good accuracy. Some scientists are trying to solve all problem through the technology. Still, many people have problems. This essay will discuss different problems with night vision in the night and their solution through the technological devices. This issue presented about vision problems while people driving their cars such as oncoming traffic, animals and… and also give a solution by establishing the night vision systematic cameras which are using especially for military purpose now.
Firstly, there are two separate modes of visual perception-day vision and night vision. Some people like to drive cars in the night because selling vehicles is increasing with innovating new technologies which create traffic problems. Nowadays, traffic problem is one of the biggest issues. But other people argued that it has a risk to drive at night compared to daytime because there are many factors are affected in driving cars at night. For example, when people drive a car in the night and fog lights come directly from other cars in our eyes which create blindness for a few minutes. At that times we cannot see anything. According to national safety council research, there are three times greater risk of fatal accidents occurred in the dark night because of fog light comes from opposite vehicles. Sometimes Light of our car focus on only a few areas of the road so, we concentrate only on that areas. We cannot know what is happening besides the road. Moreover, we all know that ages and night vision capability is vice-versa. Older people have widely seen these night vision problems because of the retina. Retina has two types of light-sensing receptor cells called rods and cones. The rods can only see black and white and the cones can see in detail but only in bright light said Stephen Ryan (2012). They are not sensible and powerful in older people. However, when light reflects from the object and enters in our eyes than after it creates an image through the retina and we can see it.
Secondly, some mammals have the ability to see well in the night which have many light receptor cells called rod that help them control eye sensitivity to light. But, some scientists research on it and establish a new product which is known as an automatic night vision camera. It has been divided in two categories, active and passive system. In the active night system, it relies on the infrared lights and it illuminates the darkness and passive system uses thermal radiation that release from cars, animals, and other potential hazards. However, one most benefit of using infrared light is that these light is not visible to human eyes and does not affect to oncoming drivers to suffer from temporary blindness like high beam headlights can.