46
4-2 Before Measurement
—
Explanation for the Patient
Clean the forehead rest with soft cloth soaked with rubbing alcohol.
（
See “9
-4
Cleaning the Forehead Rest”
）
Patients tend to be a little nervous, so it is best to try to relax them.
Briefly explain the following:
•
“This instrument automatically measures your eyes to determine the spectacle lenses
that best suit you.”
•
“Please look at the center in a relaxed manner.”
•
“Try to keep your eye as still as
possible.”
Example of a “tulip” fixation target
CAUTION
When moving the main unit laterally during the measurement, be careful to
prevent the forehead rest from hitting the patient's nose.
(For safety, it is advisable to bring the main unit away from the patient before
moving it laterally.)
CAUTION
You may fail to find the eye through the viewfinder, and this can lead to the
danger of having the main unit comes in contact with the patient. It is important
to approximately align the main unit and the patient's line of sight before looking
into the viewfinder.
When taking a measurement with 90
rotation or from the patient's
vertex, the patient sees the picture rotated by 90
or 180
, respectively.
In a measurement with 45
or 135
rotation, the patient sees the
picture tilted diagonally.
