50
OPERATING PROCEDURE: Operating Procedure and Measurement Method
8
Hold the main body level.
●
When the
parameter is
set to “NO”:
When the
“ 7. AXIS CORRECTION” (page 90)
parameter is set to “NO”, the inclination of the
main body is displayed by the inclination indica-
tor under the mire ring. Adjust the main body so
that the indication becomes
.
When the main body is tilted more than 45º, the
number display changes to “--”.
●
When the
“ 7. AXIS CORRECTION” (page 90)
parameter is set to “YES”:
When the
“ 7. AXIS CORRECTION” (page 90)
parameter is set to “YES”,
is displayed on
the screen. The sensor detects the inclination of
the main body to perform automatic axis correc-
tion using the level position (0º) as the refer-
ence.
In this step, confirm that the main body is
roughly level with the patient’s eye.
When the main body is tilted more than 45º, the
error indication “AxC OVER” is displayed and
measurement is suspended. Measurement
resumes when the main body inclination is within 45º.
9
Give the following instructions to the patient:
•
“Try not to blink during measurement.”
Instruct the patient to close their eyes and open them widely just before measurement to avoid
measurement failure.
•
“Open your eyes as wide as you can during measurement.”
Closing one eye may cause an unstable fixation and the other eye will not open widely enough.
10
Perform alignment.
While checking the patient’s eye on the screen, adjust the main body position so that the alignment
guide mark comes within the target “
”.
1)
Give the following instructions to the patient: “Look
through the measuring window. You will see the pic-
ture of a balloon. Look at the center of it without
straining”.
Inclination indicator
• When the children’s chart is used, give the following instruc-
tions to the patient: “Look through the measuring window.
You will see the picture of a flower. Look at the center of it
without straining”.
