Duochrome split
A duochrome split may be superimposed on the LogMAR and Snellen charts as shown below. In LogMAR mode
The Thomson Test Chart automatically removes the central letter in each row which would otherwise be bisected by the duochrome split.
Summary
Mouse Select the corresponding button in the toolbar |
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Keyboard U toggles the duochrome split ON and OFF |
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Remote U toggles the duochrome screen On and OFF |