Visual
Field
The
visual
field
is
used
to
test
and
monitor
peripheral
vision.
It
gives
the
doctor
very
important
information
about
the
neurological
function
of
the
retina,
optic
nerve,
and
brain.
This
test
is
usually
ordered
to
monitor
certain
eye
diseases
such
as
glaucoma,
and
also
as
a
screening
test
prior
to
surgery.
Visual
field
tests
come
in
different
forms,
but
most
have
a
white
bowl
with
a
small
fixation
light
in
the
center.
The
most
sophisticated
ones
are
computerized.
After
your
pupils
have
been
dilated,
you
will
be
comfortably
seated
in
front
of
the
instrument.
The
trick
to
the
test
is
to
stare
straight
ahead
as
lights
flash
in
the
periphery.
A
button
is
available
to
press
each
time
a
light
appears.
A
technician
is
available
throughout
the
test
should
you
have
a
question
or
need
to
pause
for
a
break.
Afterward, the computer analyzes the data and prints a chart of the results. Your visual field results are organized in your record so that your doctor can monitor your progress.
