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Add custom programming steps
Custom program selection
custom programming optotypes back to the previous step.
Custom programming startup key, custom programming optotypes advance
to the next step.
Black and white shift key: Press this key to shift the Charts between black
mark on white background and white mark on black background.
Contrast key: Select Chart contrast.
Red-Green Mask key: Press this key the Red-Green background will be
loaded.
Fast locate optotype
6.2.6 Optotype key introduction.
Remote control
key icon
Chart types display of YPB-2100
visual chart
Function
visual chart display E chart
E chart, used for visual acuity test of
adults and children
visual chart display C chart
C chart, used for visual acuity test of
adults and children
visual chart display NUMBER
chart
Number chart, used for visual acuity test
of adults and children
visual chart display LETTER chart
Letter chart, used for visual acuity test of
adults and children
visual chart display KIDS chart
Kids chart, used for visual acuity test of
children
visual chart display KIDS chart
Kids chart, used for visual acuity test of
children
