Measuring the Vertex - VisionR 800
STEP 1
Enter the Vertex distance mode
" Please look straight ahead and open your eyes. "
STEP 2
Adjust the blue line(s) until it is marking the cornea apex on the right and left eyes, using the dial jog.
(Monocular or Binocular adjustment).
STEP 3
Once the desired Vertex distance is measured, press the check button on the lower right-hand side of the screen to save it.
Make sure you save the measurement, before leaving the Vertex distance measurement screen.