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the world of
Each, the use of computer screens is more
and more commonplace at work place
which also implies greater demand from
our close-up vision. This is the cause of
many problems that are increasing among
the population with regards to their work
surroundings, such as headaches, eye irri-
tation, itching, red eyes, eyestrain, etc. This
is why it is important to learn more about
our eyes. In this first edition, we are going
to learn what this implies.
Of all the information that reaches us, 80%
is processed and interpreted by our eyes.
Therefore, when we say that a person’s
eyesight is good, we refer to the proper
functioning of all visual capabilities: sharp-
ness, ocular motility, ocular coordination,
visual memory, visual-spatial relations, etc.
which enables the correct and efficient
functioning of the very complex vision pro-
Previously, it was said that the functions of
the eye could be compared to a photo ca-
mera. Nevertheless, this concept is obsole-
te nowadays. With progress that has been
achieved, this conception of our vision has
evolved in line with technology. We can
compare our eyesight to a web camera.
Let us see now how we can compare a
web camera with our visual system.
The digital camera can be compared
to the eye, that is, it is in charge of
receiving the image.
The information received by a web
camera is transmitted thanks to a
cable or a wireless communication
system, with the optic nerve playing
this role in our visual system.
The image reaches the computer
where, thanks to its hardware, it is
processed and can be visualised in
the screen. Once the image reaches