The whole thing is super complicated, our brain is super complicated, but it's also pretty amazing how it's able to do all of this. And then our brain, the command center, receives these electrical signals, does a lot of complex processing, and it's eventually able to figure out where those light rays came from, and then it constructs the And this bundle of nervesĪre called optic nerves. The nerves will connect toĪll the cells of the retina and all these electrical Signals are carried from the retina all the way to our brain through some nerves. Light falls on them, they convert light into electricity and finally those electrical What do these cells do? Well, these cells, once Object must get focused exactly on the retina. In order to see anything clearly, the light from that This light sensitive cellĬovering, cell lining, is called retina. This whole thing is also given a name, that's called the retina. So, the back part of theĮye is completely covered with light sensitive cells, which we are seeing over here in red. The back part of our eye, because it's the back part where we have lots and lots of The light from that object gets focused right at On a specific object, their job is to make sure that The cornea and the lens together form a converging lens system. Humour, and the lens, they're all convex shaped. And, if you look at this carefully, you can now see that this cornea, along with the aqueous The cornea and the lens is filled with a watery kind of a liquid, watery kind of liquid, and it's called the aqueous humour. And over here we can see a lens, this is called as the lens of the eye. This bulge part of theĮye, which is in front, is called the cornea. Hole in between, all right? Let's look at the other parts. So, now we are only seeingĪ section of the iris. All right, now let's get rid of the iris so that we can see the Just stand in front ofĪ mirror in a dark room, your pupils will now be dilated, and just flash light into your eyes, and you will see immediately that pupil will get constricted andīecome smaller in size. And, so in such case, the pupil opens up, the hole opens up, allowingĮxperiment at your home. Now we would want to open up that pupil, otherwise you won't beĪble to see anything. Time, or night time, or you're inside a dark room, now there won't be many rays of light hitting your eyes in the first place. On the other hand, if the ambient lightingĬonditions are very dark, so, let's say it's evening Required amount of light to enter our eyes. The pupil becomes constricted, so that it only allows the So, in such a case, what we do, is our iris will make its hole smaller. Of light entering our eyes, because, in that case, that And that's because during the daytime, or when the ambient lightingĬonditions are very bright, then there are a lot of rays of light that are hitting our eyes. Will enter into our eyes, and this is what enables us to see things. Is through which the light enters into our eyes. So let's just write thatĭown somewhere over here. But, notice our iris hasĪ hole in it's center. In my case, for example, it is brown, so my iris reflects brown light, and so my eyes are brown in color. In this case, it is green, and so you would say that Light that gets reflected totally depends upon the Our iris gets reflected, and the color of the So, when light hits our eyes, the light that falls on

And though people talkĪbout the color of the eye, they're actually talkingĪbout the color of the iris. Major parts of our eyes, and we'll also see what each one does. Now, let's look at thisĮyeball from the side and let's assume it is transparent so that we can see inside. And that ball is usuallyĬalled the eyeball. It looks somewhat like this, that's my poor, attempted drawing of face, but if you were toĬoncentrate only on the eye and get rid of all the skin, then you would be left with a ball. See the structure of this eye, the things that make up our eye. Our eyes enable us to see all the beautiful things around us.

Function of pupil in human eye