Hello everyone.,As you all know, eyes provide organisms vision,the ability to process visual detail, as well,as enabling several photo response functionsthat are independent of vision.,As you are watching this video, have you everconsidered how this video would look like,if you were a cat?,Well, in this video, we are going to lookat how the internet's favorite subject sees,the world.,The biggest difference between human visionand cat vision is in the retina, a layer of,tissue at the back of the eye that containscells called photoreceptors.,The photoreceptors convert light rays intoelectrical signals, which are processed by,nerve cells, sent to the brain, and translatedinto the images we see.,The two types of photoreceptor cells are knownas rods and cones.,Rods are responsible for peripheral and nightvision, where they detect brightness and shades,of gray.,Meanwhile, cones are responsible for day visionand color perception.,To put it in simpler words, you see a lotof colors if you have a lot of cones.,And you can see better in the dark if youhave a lot of rods.,Cats actually have a high concentration ofrod receptors and a low concentration of cone,receptors.,Humans have the opposite, which is why wecan't see as well at night but can detect,colors better.,Now let's take a look at the visual field.,This refers to the area that can been whenthe eyes focus on a single point.,It includes what can be seen straight ahead,as well as above, below, and to the side.,As you can see, cats have a slighter widervisual field of 200 degrees compared to the,average human visual field of 180 degrees.,But, in the aspect of visual acuitty, whichis the clearness of vision, the average human,has a visual acuity of 20/20.,A cat's visual acuity is anywhere from 20/100to 20/200, which means a cat has to be at,20 feet to see what an average human can seeat 100 or 200 feet.,This is the reason why cats seem to be nearsighted,which means they can't see far objects really,well.,The ability to see close objects would bewell-suited for hunting and capturing prey.,As you probably already noticed, the way catssee colors is also quite different from humans.,It's a common misconception that cats can'tsee any colors, only shades of gray.,Humans are known as trichromats, meaning theyhave three kinds of cones that allow them,to see red, green, and blue.,Cats are also thought to be trichromats, butnot in the same way that humans are.,A cat's vision is similar to a human who iscolor blind.,They can see shades of blue and green, butreds and pinks can be confusing.,These may appear more green, while purplecan look like another shade of blue.,Other than that, cats also don't see the samerichness of hues and saturation of colors,that we can.,Even theough cats can't see fine detail orrich color, but they actually have a superior,ability to see in the dark because of thehigh number of rods in their retina that are,sensitive to dim light.,As a result, cats can see using roughly one-sixththe amount light that people need.,Cats also have a structure behind the retina,called the tapetum, that is thought to improve,night vision.,Cells in the tapetum act like a mirror, reflectinglight that passes between the rods and the,cones back to the photoreceptors and givingthem another chance to pick up the small amount,of light available at night.,This is what makes cats' eyes glow in thedark.