Black and Tan Coonhound (Definite Introduction)
In terms of sense and hearing, a dog's vision may not be the same. So much so that their vision is worse than that of humans. So what is a dog’s night vision like? If they have night vision, they are much better than people. So what is the reason that dogs can see things that we can’t see clearly in the dark night? This is because dogs’ night vision ability is probably that of humans. 5 times, and can maintain better vision no matter in bright or dark places.
One of the reasons why dogs can see objects clearly in a small amount of light is that their pupils are larger and can collect more light; the other reason is that there are more photoreceptor cells in the center of the dog's retina. The photosensitive compounds in it can react to low light; in addition, the lens of the dog's eyeball is closer to the retina, making the image more transparent. However, their biggest feature is that there is a layer of reflective structure called tapetum in the eyeball. This mirror-like structure located at the back of the eyeball can reflect light, giving the retina two chances to catch the light entering the eyeball, so it is popular The way a dog looks in low light. It is this structure that makes dog eyes shine in the dark. However, it will also scatter some light, making the dog's eyesight lower under normal light.
Although dogs’ vision is no better than ours during the day, they can see better than us at night. This is why they can find strangers at night, which makes our eyesight more clear. Wealth is well guaranteed.
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