There is no
specific brightness for the eyes, the only thing is to suit the average room
brightness , if the room is very bright
raise the brightness of your screen to equalize with the brightness of the
room, so that your eye will not have to readjust anytime it looks away
form, the screen,
In a dim room try to lower the brightness of the screen
so that your eye will not have to readjust to the dim room whenever you look away from the screen.
The most
important thing is to eliminate the contrast, try to minimize the contrast
between your screen brightness and
the that of the room,
When there is
a big difference or contrast between the screen brightness and the room brightness, the screen , the eye will have to
readjust anytime you look away from the screen,
In dim light the eye pupil becomes larger, so that
it can rap more light into it, so that we can see, while in very bright light
the pupil become smaller so that only small light can get into it, hence protecting
the eye lens.
Therefore if
there is high contrast between the screen and the room the eye will have to be focusing and refocusing
and refocusing in other word the eye will have to become smaller and then
larger and then smaller and then larger continuously , this will cause pan in
the eye, because of the delicate nature
of the nerves in the eye and this pain is what is called eyestrains.
