Let's find out! To begin, there are different levels of blindness we need to be aware of.

Legal blindness refers to a person's vision being 20/200 or less, with normal vision being 20/20.

A 20/200 vision means you would have to stand 20 feet away from an object to see it as clearly as a person with 20/20 vision could see it from 200 feet.

People can also have partial vision loss, where they experience things such as cloudy or fuzzy images from conditions like cataracts, or lose central vision, but maintain a normal peripheral vision like with macular degeneration.

Total blindness refers to the complete inability to see anything with either eye. But what does that mean for their perception of the world?

While it can be difficult to know what another person experiences, there are different perceptions that have been reported by individuals with total blindness.

One is that a sort of image can still be formed using the other senses, just without any color. And when I say without any color, I mean even black and white.

This was reported where the person was blind from an extremely early age. Another perception is that they might see a bright and colorful landscape of ever-changing light.

This view was reported by some people that went blind later in life and still remember what it's like to experience sight.

So does lacking sight increase other senses? Well, it used to be thought that people without sight would have a stronger sense of smell, but modern evidence seems to prove otherwise.

Using both subjective and objective testing methods, a German study found no measurable difference between the sense of smell of blind participants and those with sight.

However, it does seem to ring true that lack of sight leads to a better sense of touch.

Blindness, especially from birth, has been shown to lead to faster and more sensitive tactile abilities.

So it looks like Daredevil's incredible sense of balance and acrobatics isn't that far off! When do I get my superhero show? Because I look great in tights.

Some blind individuals have even been able to master echolocation to "see" in their own way.

Normally reserved for talking about animals like bats and dolphins, echolocation is where echoes and sound waves are used to determine where objects are.

Some people can use this technique by making clicking noises with their tongues to build a spatial representation of the world around them.

Not only can echolocation give people information regarding size, shape, and even texture of objects, but it was recently found that when processing echoes, the brain uses regions typically devoted to vision.

Maybe our visions are more than just what our eyes tell us? It also seems that people with total blindness still react to light.

Our brains can detect light through a photoreceptor in the ganglion cell layer of the retina, which is different from the rods and cones we use to see.

A recent study was done where participants with total blindness were able to correctly determine when a blue light was on or off. They also were shown to be more attentive in response to flashing lights.

Furthering the importance of this, it gives validity to the theory that light stimulates brain activity and gives enhanced performance on cognitive tasks, whether a person is blind or not!

I may not have eyes, but I can still see how incredibly cool this is. So we talk about sights, but what about our sense of sound?

Have you ever wanted to know how we actually hear things? To answer that, first we need to discuss the physics of a sound wave.

These are longitudinal waves that travel through a medium.

Thank you so much for watching. My name is Blocko. This has been Life Noggin. Don't forget to keep on thinking!