Tomey TCP-2000P, Operation Manual

Page: 85 / 113

Operation Manual
85
HORIZONTAL PART:
1. The first circle is displayed. The patient has to recognize the direction of
the top of each grating and name it:
down (picture 39a), horizontal
(picture 39b), up (picture 39c).
Pic. 39a Down gratings, Pic. 39b Horizontal gratings, Pic. 39c Up gratings.
2. Press ‘ Down Arrow ’ if the patient’s answer is ‘ down ’.
3. Press ‘ Left Arrow ’ or ‘ Right Arrow ’ if the patient’s answer is
‘ horizontal ’.
4. Press ‘
Up Arrow
’ if the patient’s answer is ‘
up
’.
5. Press ‘
NO/-
’ button if the patient’s answer is ‘
don’t know
’.
Continue this procedure throughout the test. The information about the
present contrast sensitivity and spatial frequency is displayed in the right-
bottom corner.
To leave Contrast Sensitivity Test press ‘ESC’ or press
once again ‘ CONTRAST ’ button.
5.8.4. Contrast Sensitivity Report Function
For more information please, refer to chapter
7 Report function.
5.8.5. Technical Data
1. In defining the contrast of sinusoidal gratings, the luminance of reference
is the mean luminance of the peak waves. Therefore, modifications to the
HINT !