Operation Manual
18
4.9. Snellen background
Option ‘Snellen background’ allows to select black or white background for
stripe with sharpness size.
1. Enter ‘Snellen background’, using Arrow Up or Arrow Down button.
2. Press Right Arrow to enter edit mode.
3. Use Up and Down Arrows to set edited parameter ’’Black’ (black stripe)
or ’’White’ (white stripe).
4. Press Left Arrow to apply changes.
Pic. 4. Screen with black background
Pic. 5. Screen with white background
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