Operation Manual
36
5.7. Street lamp test
1.
Press
to display Street lamp test.
2.
Press Right Arrow or again
button to display next presentation of
Street lamp test.
3.
Press Left Arrow to return to previous presentation.
5.8. Ishihara tests
1.
Press
to display first Ishihara test.
2.
Press Right Arrow to display next test.
3.
Press Left Arrow to display previous test.
4.
Press Up Arrow to jump 10 tests forward.
5.
Press Down Arrow to jump 10 tests backward.
6.
Press
again, to display test hint.
5.9. Contrast tests
Three types of contrast test are available.
1.
Dot test.
2.
Snellen E charts.
3.
Landolt ring charts.
1)
Press ‘
CNT
’ button do display first contrast test – Dot test.
a)
Press Up or Down button to change size of the dot.
Information about
current contrast value is constantly displayed on the screen.
2)
Press Right Arrow to display Snellen E contrast chart.
a)
Press Down Arrow to display smaller size optotypes, available
sizes are from 0,125 to 2,0.
Содержание TCP-2000
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