Name: 猫の瞳孔が縦長なのはなぜ？| 猫の瞳孔はなぜ縦長なのか｜#aumsum (Why do Cats have Vertical Pupils? | #aumsum)
Uploaded: 2021-01-14T08:10:57.000Z
Duration: 3 min 31 s
Description: VoiceTubeの動画で発音を聞きながら英語表現を覚えよう！学べる英語：

Can you guess the title of my next video?

Write your guess in the comments section below.

A pupil is an opening in the iris which regulates the amount of light entering the eye.

Now, not only cats but also predators like
crocodiles, snakes, etc. have vertical pupils.

Since these animals hunt in day as well as
at night.

Vertical pupils allow a greater control of the amount of light entering the eye.

Round pupils in humans can change their area by a factor of 15.

While, vertical pupils can change their area
by a factor of 135.

Hence, on a bright day, predators can turn
their pupils into narrow slits, allowing less light to enter.

Thus, preventing their eyes from getting dazzled.

Also, when there is less light or in near-darkness, the vertical pupils expand to a strikingly large extent.

Allowing more light and thus, helping the predators to see and hunt more preciously.

Eye floaters are tiny spots or thread-like
strands that drift in our field of vision.

When we move our eyes and try to look at them directly, they seem to dart away.

When light from an object enters into our eyes.

It passes through the vitreous humor to form an image on the retina.

Vitreous humor is a clear gel-like substance.

These collagen fibers are spread evenly throughout the vitreous humor.

But sometimes, these fibers tend to come together forming clumps or strands.

When we look at a clear sky or a blank page and the clumps or strands are very close to the retina.

Making them easily detectable in the clear background and thus, forming eye floaters.

Maybe because there is some secret code hidden in it!!

It is because mirrors form laterally inverted
images.

Lateral inversion is a phenomenon due to which the left side of an object appears to be the right side in the mirror.

The right side appears to be the left side.

We know that ambulance is an emergency vehicle.

Hence, when the driver of the front vehicle
will see the ambulance in the rear-view mirror.

He will see the laterally inverted image of
the word and thus read it correctly.