Rotate the dial slowly. Stop immediately
when the upper icon
becomes clear, while the lower icon is still blurry
.
3
1
2
4
5
1. Estimate Refractive Error
Read the result from the
screen. Then go back to step
1 and
repeat 3 times
.
Turn the occluder to another
side, repeat the process for the
other eye.
3
Clear
Blurry
EN
Set the device to +6.00D
by rotating the dial.
Look through eyepiece, cover
the other eye by the occluder
and keep both eyes open.
