Visual Field Examinations W E E K 2

Visual Field Examinations
WEEK 2
AMSLER GRID AND CONFRONTATION
VISUAL FIELDS
Amsler grid
The Amsler grid is a
tool for evaluating the
macular region of the
central visual field. This
is a portable test that is
done in the office and
can be taken home by
the patient to monitor
their vision and any
changes that might
occur. This is kept in
the patient’s chart to
compare
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Amsler Grid
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Amsler grid testing is
for central VF.
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This test is specifically
used for macular
problems such as,
macular degeneration
and macular holes.
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To perform an Amsler grid test:
Have the patient cover his left eye and look at the center
dot.
Have the patient hold the test 12- 16 inches away, at
normal reading distance.
While looking at the dot, instruct the patient to look at
the grid overall making sure that all four corners are
there. Instruct the patient to let you know if there are
any lines missing or curved.
Some patients will have trouble seeing the dot in the
center. You may instruct then to imagine the center dot
or make it larger with red ink.
If there are any abnormalities, they need to be noted with
pen by the patient.
If there are no abnormalities, note WNL ( within normal
limits)
Every Amsler grid must have the patient’s name, date of
the test and what eye was tested written on the test.
This is the most basic
type of VF testing. No
equipment is necessary;
it can be don any time or
any place. This test will
only pick up extensive
VF loss.
Confrontation Visual field
Confrontation Visual Field
Make sure the patient has one eye
occluded and is looking at your nose.
Make sure that you are placing the target
in the patient's VF not yours!!!
Confrontation VF
Always label with Patient's name
and date.
Any VF loss’ must be shown and
labeled.
Scotomas
A scotoma is a loss of
vision in one’s VF that
should normally have
been seen.
Scotomas can be
absolute (NLP, total
vision loss) or relative
(some loss of vision)
Relative scotomas may
be referred to “shallow
or deep”.
Types of scotomas