First of all, I want to start by stating that the human eye is an analog structure and it is not entirely possible to measure it with a digital term pixel size. The Vision Center in the brain cannot perceive the light information from the eyes like a film curtain. Creates an image by commenting the light information from the brain. This image is constantly refreshed, depending on the speed of neurons that go into the brain, i.e. the nerve cells.
For example, if we consider it a value of fps (frame per second), the 30fps in a video movie is sufficient for our eyes to see the image completely fluently. But that doesn't mean that the human eye is 30fps. The human eye has a certain threshold value, and when you look at a passing object that is faster than that value, it cannot capture his movements and see it as nothing has passed. Using cameras with high shutter speeds used nowadays, the movement of a bullet can be easily examined in milliseconds.
We can do a simple test for the speed of the human eye. First, bring the vertical scan frequency of your computer monitor to the CRT (Cathode tube) to 60 Hz. To do this, right-click on the desktop and select Properties, and then follow the monitor tabs to access the Hz settings. After bringing it to the 60 Hz, look at the screen at a distance of 30cm, focus on an object on the side of the monitor, but see the monitor with the eye tip. You'll notice how the screen refresh that you normally don't feel when you're looking straight is scanned from top to bottom. If you notice 60 Hz while you're looking at it normally, try it at 75 Hz. I can handle it myself to 75 Hz, but I can't see any more page transitions at 85 Hz and above. The speed of the eye can vary from person to individual. People who follow constantly detailed and moving things with their eyes and work very carefully with high-eye reflexes are seen faster.
The retina with the light sensors of our eyes is a membrane consisting of a neural structure. The light sensors in the retina are the size of the digital cameras as well as the sensors. In fact, in the pit portion of the retina (fovea), the numbers of these sensors are more than other regions and the light falling on the retina is compressed into the brain. That's why we look at us sometimes and we see the way they are. The number of light sensor cells in our eye (or say pixel) is not affected by the quality of vision as long as it is above a certain critical value. Because the brain completes the image. Even if we don't have one eye, our image resolution is not decreased, just a little bit of depth feeling disappears. We do not see a portion of the image missing, even in cases where the majority of the light cells in the eye are ruined, called retinal "Detachment". We can look at it like this: You're closing half the lens on your camera, but you still see the image full; Because the camera's processor completes the missing part.
In order to express the eye's vision capacity as megapixels, it is necessary to test the eyes of the receptors in pixels, thinking about what level of detail the brain can create. The human eye is a small organ and it does all the things with a little amount of light coming upon it. But the lenses of the high-megapixel cameras are quite large and depending on it, they see a lot more enlightened areas in a dark scene than the human eye. It is possible to say clearly that if you take the highest megapixel rate with an eye-sized lens and then pull the photograph and compare it to the same landscape, I'm sure the human eye can perceive more details and. The photograph taken by the digital machine will be understood that it can capture a lot less detail if it is viewed and examined in the same way that people are seen without zooming.
Therefore, the human eye is an organ that is too perfect to be compared with the image of artificial lenses. But digital data can be expressed as megapixels. If the conditions mentioned above are provided, the calculation can be performed by placing a value of approximately. But we should not be able to think that the term megapixels is nothing but a concept that shows how many pixels are actually displayed in a scene. Of course, the more pixels it will look, the more detailed it is, but to compare it to the proportion of the human eye, it is necessary to consider the subject as a major research subject and investigate and experiment in laboratory conditions.