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TERMINOLOGY
Term
Description
Page
Fogging During Continu-
ous Measurement
For KR-1W, when performing Ref measurement more
than once, to perform fogging for each measurement or
to perform fogging only once in the first measurement
can be set.
For example, when auto alignment mode is "FULL
AOTO," number of continuous measurements under Auto
mode is "3," and R-L continuous measurement is "BINO,"
select "ONCE" to perform fogging in the first measure-
ment each of right/left eyes, or select "ALWAYS" to per-
form fogging for each measurement.
Fourth-order Display
4th order of Zernike polynominal equation.
Hartmann Detection Grid
Overlay
To detect Hartmann point image, detection area is dis-
played.When grid overlay is displayed, Hartmann point
image cannot be detected if it is out of the range.
Hartmann Detection Point
Overlay
From the Hartmann image displayed on analysis result
screen, the range where the recognized point image is
located can be confirmed. Point overlay is overlapped.
Hartmann Image
Image taken by Hartmann-Shack sensor's principle.
In KR-1W, Ref measurement values and wavefront aber-
ration related to eyeball are calculated.
High Order Aberration
(irregular astigmatism)
Aberrations of Zernike polynominal equation (3rd and
higher orders). Called irregular astigmatism, which can-
not be corrected by eyeglasses and contact lenses.
HOA
Short for High Order Aberration.
HV
Corneal curvature radius (mm) in horizontal/vertical
direction or corneal refractive power (D) and the angle,
obtained from the results of Kerato measurement.
I
Mark
Mark displayed in the receipt outputted by internal printer
in IOL mode measurement.
Instantaneous Power
map
Map showing corneal refractive power with local power
distribution.
Internal Aberration
Intraocular aberration obtained by (aberration of the
whole eyeball minus aberration of cornea).
IOL Mode
Hartmann image may become unmeasurable on eyes
wearing IOL and eyes suffering cataract.
In this case, KR-1W, using IOL mode, can change cam-
era's exposure time and lower error rate.
IOL Selection Map (anal-
ysis result display map)
Map displaying analysis information necessary for pre-
scribing IOL.
K value
Kerato measurement value.
Landolt's Ring Simulation View of Landolt's ring by complete correction can be
seen in simulation. Landolt's ring is seen clearly when
there is no high order aberration, but not seen clearly
when high order aberration exists.
Summary of Contents for KR-1W
Page 1: ...INSTRUCTION MANUAL WAVE FRONT ANALYZER KR 1W ...
Page 2: ......
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Page 188: ...KR 1W WAVE FRONT ANALYZER 41835 97992 Printed in Japan 2010 02 100LW2 ...