Asus VY279HE User Manual - Page 18
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• EyeCheck: The EyeCheck function contains three patterns: (1) Snellen
Chart (2) Amsler Grid (3)Astigmatism.
1.
2.
While focusing at the center point, check that all the lines are
straight.
3.
Check that each line is of the same width.
3-4
Snellen Chart
P1
Amsler Grid
Astigmatism
P2
P3
Chapter 2: Setup