Visionix EyeRefract User Guide
51
Overview of the Software
ETDRS patient-response controls
For each letter the patient reads, select Y if the patient read it correctly, or N if the patient did
not.
Ishihara Chart Controls
When the Ishihara color-blindness test is selected (#3 in the illustration below), controls for
selecting the required group of images (#2 below) and cycling through the images in the
selected group (#1 below) are added to the chart-control area.
Ishihara image-selection controls
Tap the up and down arrows to select the required group and image.
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