Tomey TCP-2000, Руководство пользователя

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Operation Manual
32
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.
The examiners are free to apply to HOTV test the same
procedure as with Letters, Numbers and Pictures, but
matching technique seems to provide more precise
answers.
To obtain more reliable results, matching technique can be
applied also to Pictures and Numbers, as there are not
many optotypes to choose from.
•
Choice two is indicated by a green bar at the top edge of the display.
•
If you recognize choice two, you are asked to point to an appropriate letter
from the chart received from the doctor.
• If you do not recognize choice two, point with your right hand to the side.
•
The rest of the test will be conducted in this way.
III. Instructions for patients being presented with: Landoldt Rings,
Snellen E or Hands:
• When two bars, blue at the bottom and green at the top of the display are
presented, the examiner is indicating to you that you are going to see two
new choices.
• Choice one is indicated by a blue bar at the bottom edge of the display.
• You are asked to point in the direction to which it is ‘open’ (9 directions
in case of Landoldt Rings, 4 directions in Snellen E, 4 directions in
‘Hands’).
e.g. if you see
$
, point to the right.
• Choice two is indicated by a green bar at the top edge of the display.
•
You are asked to point in the direction to which it is ‘open’ (9 directions
in case of Landoldt Rings, 4 directions in Snellen E, 4 directions in
‘Hands’.
•
The rest of the test will be conducted in this way.
NOTE !