Potec PRK-8000 - 5.2 REF Mode Measurement; Entering and Preparing for REF Mode; REF Measurement Execution

PRK-8000 Operation Manual
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5.2 Refractometry [REF Mode]
Only refractometry can be performed in the REF mode.
(1) Enter REF Mode
Press MODE button on the left side of the display, and then select “REF”.
(2) Follow the same procedure (2) of the Continuous Keratometry and Refractometry [K/R
Mode].
(3) Perform alignment and Focusing
Align the pupil and alignment marks, and focus on the mire image by using the
operation lever. The focus is correct, the color of the aiming mark changes to yellow
color.
(4) Measurement
Press the measuring button .
Measurement will be continuously performed when the measuring button is kept
pressed.
z If you change setting for REF/KER of SETUP Mode, you can select the vertex
distance.
z If you change setting for REF/KER of SETUP Mode, you can change display format
of CYL value.
NOTES:
① There can be error if the Outer Alignment Mark and the pupil is eccentric.
② There may be some aberration to the measurement value due to the
eccentricity or inclination of lens, or deformation of cornea after surgery.