78
OPERATING PROCEDURE
Chart Presentation
2.6.3
Low illumination, glare lamp, and contrast functions (SSC series)
When the SSC-350, SSC-350CG, SSC-330U, or SSC-370 is connected, the following functions are
available.
Low illumination
Glare lamp
Contrast
SSC-350T/M/
SSC-370T/UK/M
Available
Unavailable
Unavailable
SSC-370MG
Available
Available
Unavailable
SSC-350TCG/MCG/
SSC-370MCG
Available
Available
Available
SSC-330U
Unavailable
Available
Unavailable
When the SSC-350 or SSC-370 is connected, in addition
to the
button, depending on the model, the following
buttons are displayed below the chart buttons.
SSC-350TCG
SSC-350T/M
SSC-350MCG
SSC-370MG
SSC-370MCG
SSC-370T/UK/M
ࠉ
: Turns on or off the glare lamp.
The glare function makes it possible to test the
visual acuity under dazzling conditions. This
function can evaluate vision deterioration caused
by decreased contrast when scattered light
reaches the macular part of the eye due to opac-
ity or irregularity of the lens.
is shown to the right of the displayed chart
on the chart window when the glare lamp is
turned on.
This button can also change the glare lamp lumi-
nance only for the SSC-350MCG or SSC-
370MCG. Pressing
changes the luminance
in the order of high luminance
medium
luminance
low luminance
OFF.
ࠉ
:Switches between the low-light illumination and
standard light illumination.
The low-light illumination function makes it possible to test the visual acuity under night-time
conditions. This function can test whether or not the subject can recognize the low-light chart
(9 to 10 cd/m
2
) for reference to diagnose light sense disturbance.
is shown to the right of the displayed chart on the chart window when of the low-light
illumination.
In addition, the control box screen becomes the brightness set for the Night mode. See “3.17
Controlling Backlight Brightness”.
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