We have all been told at one time or another not to read
books or other printed material in the dark. These days most people read and
watch images in the dark from the screens of devices like laptops, TV, iPad, iPhone,
tablet computers, android phones, computers and other devices with light on
their screens. Hand-held devices are held close to the face in the darkness
when used sometimes and some people are concerned if this is okay or not, and if
there will be long-term effects of this action.
When the eyes are going to be used in a place that is dark
or with limited light, the eyes will dilate
more. When you reading from a
screen or watching on a screen, there is always a change in the light being
emitted from the screen when you actions like flipping, commercial breaks,
going back on your screen, going to a new page, changing channels, etc. This
results in the eyes working harder to adjust to the constantly changing levels
of light being emitted. The eyes muscles are just like other muscles in the body
and will get tired from working hard. This will result in headaches, sore eyes,
tired eyes, teary eyes, eye fatigue, blurred vision, eyestrain etc.While there is no research that says that staring at screens in the darkness can damage your eyesight or have negative effects on your sight, it is better to do things more safely for better health over time. Read on your lighted devices or watch TV and other screens with a secondary source of ambient light. The secondary light source may be dim or soft, but this will definitely reduce some of the stress on your eyes by not making the changes in emitted light from your device obvious.
Hand-held computer devices came into popularity in the 2000 with the first iPhone out in 2008 and iPad in 2010. Nobody can tell you
about what long-term effects that can occur due to using them in the dark. Who
knows what the outcomes may be in the next 10, 15, 20 years or further down in
future?
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Twitter @heal2bwell for updates.