Operation Manual
40
NOTE !
Sample instructions for hearing and speaking impaired patients:
I. Instructions for patients being presented with: Sloan Letters, Numbers
and Standard Pictures:
• When two bars, blue at the top and green at the bottom of the display are
presented, the examiner is indicating to you that you are going to see two
new choices.
• After you have seen both choices, you should decide which one seems
clearer and better by pointing with your hand in the direction of the bar
which represents the better choice (up or down). It may happen that
neither choice seems perfectly clear. That is OK, simply choose which
one seems better.
• If neither choice seems better than the other, indicate to both directions.
• The rest of the test will be conducted in this way.
With patients able to speak: When the optotype is presented,
the examiner is asking you to read it (Letters and Numbers)
or name it (Pictures).
II. Instructions for patients being presented with: HOTV test:
• When two bars, blue at the top and green at the bottom of the display are
presented, the examiner is indicating to you that you are going to see two
new choices.
• If you recognize choice one, you are asked to point to an appropriate letter
from the chart received from the doctor.
• If you do not recognize choice one, point with your right hand to the side.
Professional charts are available from many distributors of
visual acuity equipment. The chart can be simply a handout
with big letters HOTV printed on it.
.
To obtain more reliable results, matching technique can be
applied also to Pictures and Numbers, as there are not many
optotypes to choose from.
NOTE !
NOTE !
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