Colour
Blindness
 
Screen 1 of 2
People
 
who
are
colour
blind
 
are
missing
some
 
of
 
the
 
cones
 
in
 
the
retina
 
of
 
the
eye.
You can
 
be
colour
blind
to
different
colours.
Red
 
Green
colour
blindness
 
is
 
the
most common.