Interesting Facts About Human Eye: Our eyes are a unique gift of nature, through which we are able to see the colorful world. Eyes are also a sensitive bridge of information between our brain and body. The eyes allow us to sense color, size, distance, speed, and intensity of light. You must have often felt that when you see things that are several kilometers away, they appear much smaller than their actual size. If you were asked how far our eyes can actually see, you would say 1-2 kilometers or maybe a little more. However, many interesting facts related to eyes may surprise you.

If we look at the sky, our eyes can even see objects located millions of kilometers away, such as the moon and the sun. The reason for this is that these celestial objects are so large that their image is visible on our retina. According to NASA, the Moon is about 3.84 lakh kilometers away from the Earth and the Sun is about 15 million kilometers away. Still we can see them clearly. Although these planets appear very small from millions of kilometers away, their size is very large. The range of the eyes depends not only on the distance, but also on the size of the object, light emission and its brightness.

Now the question in your mind will be why distant objects appear small? The answer lies in optics. Eyes work according to the laws of divergence and refraction of light. As an object moves away from our eyes, the size of the image formed on its retina becomes smaller. For this reason, as the distance to a building or hill increases, it appears smaller. Also, dust, water vapor and reflection of light present in the atmosphere can make the image a bit blurry and unclear. The lens and cornea of ​​the eye change their thickness to focus on distant objects. This process is called accommodation. If the eyes do not function properly, distant objects appear blurred.