العمل أمام شاشة الكمبيوتر

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Working on screen long hours is tiring for the sight, even if it varies from one person to another.

Here are some tips that can help reduce eye tiredness.


-- Increase the frequency refresh the screen.
60 Hz is insufficient.
Try at least 75 Hz or more if your monitor supports it,
even down to resolution (1024x768 or 800x600 instead 1280x1024).
Some people are more sensitive than others
to the sweep frequency , but even if you do not see it, this affects eyes.

-- Regularly watch distant objects for a few seconds (10 to 30 seconds).
This helps relax the muscles of your eyes,
which are requested by the accommodation objects near the (screen)
Consider also the coffee breaks.

-- Arrange (if possible) your job for not having a glare on the screen
(for example, are not working in a back window).
If there is sun on the screen, claiming curtains.

-- Adjust properly contrast: black must be black (and not dark grey).
For that, turn down the brightness of your screen (the little sun).
A completely blank page does not dazzle you. To do so, adjust the contrast.

By playing on contrast / brightness,
you should get something correct (try different settings).

Here is an image to help you set your monitor:








Ideally:
-- Grade A should be black.
-- You should be able to distinguish the difference between grade A and B and between Y and Z.
(That said, some bad monitors will not go that far.)

-- Generally, change Windows settings so the default color substantive text is not white,
but light gray. This rests more the eyes.

-- There is no special glasses for computering.

-- Filters screens are not always a good solution:


(The glass / plastic, only reduce the contrasts and are highly reflective.

-- If you have an LCD (TFT), be sure to well pass in the resolution which corresponds to the screen.
Otherwise, the letters are "confused" and tiring to read.

-- Adjust the vertical orientation of the screen and height of your seat for a look slightly down, especially if you wear progressive lenses.
Do not work with the screen on its side, too high or too low.
(If you keep several hours the head turned to the right is you'll have a neckpain and probably also headache.)

-- Do not take too small fonts.
Reduce the resolution, or increase the font size in order to have something readable.

-- If you have to read long texts on the screen, it is better to choose another police (as Verdana) rather than
policies wheelbase (Times New Roman).
Similarly, you can in most browsers force the font to select a police baton (better readability).

-- If you are a programmer, there are other policies better adapted than 'Courier' (type of police).

-- In some software, do not hesitate to change the font size (even temporarily) so as not you affect eyes
to read the tiny hieroglyphics on certain web sites.

-- In many software (Internet Explorer, Word, Excel, ...) hold down the CTRL key at the same time you roll the wheel
of your mouse to zoom in / out.