"The human eye is brilliantly complicated, made up of a superb, interconnected system of approximately 40 individual subsystems. These include the iris, pupil, retina, cornea, lens, and optic nerve. By simultaneously detecting contrast while also capturing faint details, the human eye exhibits superiority over the most sophisticated camera today.
Its design has been maximized for life in our environment.
The retina, the innermost, light-sensitive layer of eye tissue, can be thought of as equivalent to the film in a camera, or as a sensor with cells that act like individual pixels in a digital display.
There are approximately six to seven million cone cells. All of them are concentrated near the macula, the oval-shaped pigmented area in the center of the retina.
The retina, the innermost, light-sensitive layer of eye tissue, can be thought of as equivalent to the film in a camera, or as a sensor with cells that act like individual pixels in a digital display.
There are approximately six to seven million cone cells. All of them are concentrated near the macula, the oval-shaped pigmented area in the center of the retina.
Additionally, there are three varieties of cone cells that are sensitive to different colors of light. Between them, they span the visual range of wavelengths of the electromagnetic spectrum (400–700 nm):
L-cones (long-wavelength) are sensitive primarily to red in the visible spectrum
M-cones (medium- ) are sensitive to green
S-cones (short- ) are sensitive to blue.
The visual cortex, the part of the brain that processes visual information, interprets the pulses as color, contrast, depth, and other information. (There is also a lot of data processing in the retina itself.) This allows us to make sense of all the data, and ‘see’.
M-cones (medium- ) are sensitive to green
S-cones (short- ) are sensitive to blue.
The visual cortex, the part of the brain that processes visual information, interprets the pulses as color, contrast, depth, and other information. (There is also a lot of data processing in the retina itself.) This allows us to make sense of all the data, and ‘see’.
We can discern about 10 million colors."
CMI