Physics, asked by anshi234567, 11 months ago

why do we have two eyes for vision not just one

Answers

Answered by Anonymous
3
The problem of parallax error in visionis reduced a lot because of this doubleeye vision. It also enhances our depth perception giving us a very good evolutionary advantage. Also, our ability to detect faint objects is more distinct. Thanks to our 'two' eyes, humans are able to enjoy stereoscopicvision.
hope it will help u ✌️

anshi234567: i am just watching simmba movie
anshi234567: of bollywood
Anonymous: ok see that movie
Anonymous: bye
anshi234567: hii
Anonymous: hi
Anonymous: hello anshi good morning
Anonymous: Hi
Anonymous: hello anshi
Anonymous: are u using brainly
Answered by garganshika17
0

Answer:

There are many advantages of having two eyes instead of one. Some of these are given below.

1. Having Two Eyes Gives a Wider Field of View. A human being has a horizontal field of view of

about 150° with one eye open but with two eyes open,

the field of view becomes 180°. Thus, having two eyes

gives a wider field of view. This means that with two

eyes open, we can see a much larger area in front of us

(than can be seen with only one eye).

The human beings have two eyes at the front of their

head, so their field of view is limited to about 180°. Some animals, however, have their two eyes

located on the opposite sides of their head. Those animals who

have two eyes on the opposite sides of their head have the widest

possible field of view. They can see much larger area around them

than the human being can see. The animals of prey (like rabbit,

deer, chicken, fish, etc.) have their two eyes on the opposite sides

of their heads so that they can see their enemies (predators) in a

very large area around them and try to escape from them . A domestic animal having its two eyes on the opposite

sides of the head is horse.

2. Having Two Eyes Enables Us to Judge Distances More

Accurately. Our two eyes are a few centimetres apart from each

other . Due to this, the two eyes see the same object

from two slightly different angles and send two slightly different

images of the same object to the brain. The brain combines these two slightly different images to build a

three-dimensional picture of the object which enables us to judge the distance of the object more accurately.This will become clear from the following example. Let us take two sharpened pencils, one in each hand.

Stretch the arms forward and try touching the tips of pencils first with one eye open and then with both

eyes open. We will find that it is difficult to touch the tips of two pencils with one eye open but it is much

more easy when both the eyes are open . This is because with both the eyes open, we can

judge the distances of the pencil tips more accurately. Human beings (and all other animals having their

eyes at the front of their head) are said to have stereoscopic vision (or stereopsis) which gives the perception

of depth. All the predators (like tiger, lion, etc.) have their eyes at the front of head so that they can judge

the distance of their prey accurately and catch them easily .

Similar questions