I
Night
Vision
No
one can see as well at night as in the daytime. But as
we get older these differences increase.
A
50-year-old
driver may require at least twice as much light to see the
same thing at night as a 20-year-old.
What you do in the daytime can also affect your night
vision. For example,
if
you spend the day
in
bright
sunshine you are wise to wear sunglasses.
Your
eyes will
have less trouble adjusting to night. But if you’re
driving, don’t wear sunglasses at night. They may cut
down on glare from headlamps, but they
also
make
a
lot
of
things invisible.
You
can be temporarily blinded by approaching lights. It
can take a second or
two,
or even several seconds, for
your eyes
to
readjust to the dark. When you are faced
with severe glare (as from a driver who doesn’t lower
the high beams, or a vehicle with misaimed headlamps),
slow down a
little.
Avoid staring directly into the
approaching lights.
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