Topcon MC-4S, User Manual

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CHART FUNCTIONS UNIQUE TO THE MC-4S
Canceling "Single rate character contrast"
1
Touch the [Contrast] button among the function buttons at the bottom of the screen on the KB-
50S to display the contrast setting menu.
2
Touch the [Exit] button on the contrast selection menu, and the "Single rate character contrast"
mode is canceled.
Plural rate character contrast mode
In the "Plural rate character contrast" mode, the contrast conditions of the five stages, 25%, 12.5%,
10%, 5% and 2.5%, can be displayed on one chart at a time.
Relevant chart
This function is applied to a visual acuity chart having 3 lines and 5 columns.
An example of the test chart icon displayed on the chart page of the KB-50S:
NOTES
• When operating the CV system through a mouse/personal computer, you can
cancel the contrast with the same procedure.
• When changing to a chart that is not applicable to this mode, the "Single rate
character contrast" mode is also canceled.
Usable chart
Unusable chart