![Eli Ezer ERK 7800 Operation Manual Download Page 21](http://html1.mh-extra.com/html/eli-ezer/erk-7800/erk-7800_operation-manual_2388690021.webp)
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7.2 REF MODE
Only refractometry is performed in the REF mode.
7.2.1 Additional functions
a. The buttons change when the [FUNCTION] button is pressed.
b. The respective values can be changed by pressing the [VD], [STEP], or [CYL] button.
c. The measurement mode is changed to cornea curvature measuring mode or pupil
observing mode by pressing the [SIZE] or [ILLUM] button.
Automatic or
manual shooting
Cylinder
form
Right eye
수
[ Drawing 9 ] REF measurement screen
PD 64
수
MODE
MENU
DISPLAY
AUTO
IOL
FUNCTION
VD
STEP
CYL
SIZE
ILLLUM
RETURN
[ Drawing 10 ] Operating buttons diagram of REF
Right eye
measurement
result
Measurement
mode
Step
size
Shooting
times
Number of
measurements
Patient
number