177
TERMINOLOGY
Term
Description
Page
Placido ring
Ring-shaped part around the measuring window of main
body.
In KR-1W, measuring beam is projected from Placido
ring, and the measured cornea shape is calculated by
receiving the ring beam reflected by patient's cornea sur-
face.
Power save
When not used for certain period, screen saver is actu-
ated and main body gets into power save status. Time to
get into power save status can be set.
Printer cover open button Used to open printer cover.
Progress bar
Display showing progress of startup on start screen.
Progress measurement
By continuously performing measurement for 10 shots at
a rate of 1 shot/1 sec., you can see the condition of aber-
ration changing by elapsed time, such as dry eyes.
Pupil Diameter Center
Travel Distance
Distance of pupil center and mechanical center (corneal
vertex).
Pupillometry Map (Analy-
sis result display map)
The pupil diameter measured under pupillometry mode
and analysis results of wavefront aberration are dis-
played.
Q value
Aspheric coefficient.
R button, L button
(right/left change button)
Used to change right/left eyes, and displays the position
of measuring head in orange.
When measuring head is at the eye to be measured,
pressing the button displays lock icon and single-eye
measurement mode sets in.
R/K change button
Used to change measurement mode between Ref &
Kerato/Ref/Kerato.
REF/KRT measurement
mode
Measurement mode of simultaneous Ref & Kerato mea-
surement, single Ref measurement and single Kerato
measurement.
Since KR-1W calculates Ref measurement values from
Hartmann image, it can also perform analysis related to
ocular aberration. For analysis, pupil diameter is
required; Mire image can be obtained even by single Ref
measurement mode.
However, since only detection of pupil diameter is done
and detection of Mire ring is not done, analysis related to
cornea shape cannot be done.
For Kerato, as Kerato measurement values are calcu-
lated from Mire image, cornea shape can also be ana-
lyzed. Since Hartmann image is not obtained, analysis of
ocular aberration cannot be done.
Summary of Contents for KR-1W
Page 1: ...INSTRUCTION MANUAL WAVE FRONT ANALYZER KR 1W ...
Page 2: ......
Page 186: ......
Page 188: ...KR 1W WAVE FRONT ANALYZER 41835 97992 Printed in Japan 2010 02 100LW2 ...