Randomising letters
The test chart may be displayed with the default arrangement of letters / optotypes as specified in the Program Options screen or with the letters randomized:
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Mouse Click on O to cycle around the defined letter configurations and R to randomise the letter order |
Keyboard O to cycle around the defined letter order R to randomise the letter order |
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Remote O to cycle around the defined letter order R to randomise the letter order |
The defined letter order can be specified for each chart type and optotype by selecting Options ... Chart Optotype Selection. This displays the screen shown below:
This allows five standard sets of letters / optotypes to be defined for each optotype and chart type.
