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Is it better to
adjust the television set to room lighting or room lighting to the
set? Adapt the set's
brightness and contrast to room lighting -- not room lighting to the
set -- after the room lights have been turned on.
Is it all right
to wear sunglasses while watching television?
Generally, no. Sunglasses may shut out
too much light for good vision. If worn when not needed, they tend to
make it difficult for the viewer to adapt promptly to normal light
levels. If you are bothered by brightness, consult with an eye care
practitioner about the possible need for lenses more appropriate to TV
viewing.
Possible difficulties
with TV viewing
Children sometimes sit close to the set. Does this hurt their eyes?
While close-up viewing is certainly not recommended, it is
generally not harmful. It is best to watch television from a distance
of at least five times the width of the picture. Picture details will
appear sharper and better defined and the television lines and defects
will be less apparent. If your child persists in watching television
from a short distance, have his or her vision checked. Nearsighted
(myopic) children like to sit close to the screen.
What does it
mean if the eyes water or if there is other visual discomfort while
watching television? It could
indicate a problem that needs professional attention. Some viewers,
especially those over 50 years old, may find relief with special
glasses for television viewing. Discomfort could also indicate that
the drainage passages which drain tears from the eyes into the nose
are partially blocked and require examination.
What about color
television for viewers with color vision deficiencies?
Color deficiency (i.e. color blindness)
is generally not a barrier to enjoying color television. However,
viewers with color deficiencies may disagree with others as to the
"proper" color adjustment. A color TV picture properly adjusted for
most people may appear too green to a protanomalous (weak red)
observer, or too red to a deuteranomalous (weak green) viewer. When
the set is adjusted to "correct" its color, the resulting picture is
usually unsatisfactorily tinted for other viewers. Viewers who are
severely color deficient, the so-called "red blind" or "green blind,"
will see little or no difference in widely different color mixtures,
and will not be bothered by most color adjustments.
TV viewing tips:
- Make sure your
television set is properly installed and the antenna properly
adjusted.
- Place the set to
avoid glare and reflections from lamps, windows and other bright
sources.
- Adjust
brightness and contrast controls to individual and/or viewer's taste
and comfort.
- Have the set at
approximately eye level. Avoid having to look up or down at the
picture.
- Avoid staring at
the screen for lengthy periods. Briefly look away from the picture,
around the room or out the window.
- Wear lenses
prescribed for vision correction, if advised to do so by your eye
care practitioner.
- View from a
distance at least five times the width of the television screen.
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