50 Auto Ref/Keratometer HRK-7000/7000A --------------------------------------------------------
8.4.
Keratometry Peripheral Measurement (KER-P Mode)
It is the mode to measure the curvature of part around cornea. Based upon the center
of cornea, measure the curvature of part around cornea from the positions of up/down
and left/right direction. It is to indicate the relative eccentricity while comparing the
curvature of part around cornea with the curvature of corneal center.
NOTE
The eccentricity means how even the part around cornea is compared to the corneal center.
Generally, human cornea has the highest curvature and the longer the distance from the
corneal center is it gets more even. Consequently, in case of prescribing lens such as RGP
with corneal center curvature only, the patient can feel uncomfortable while putting on the
lens. It is possible to select the appropriate lens considering the characteristics of patient
by using the eccentricity of part around cornea calculated in KER-P mode.
①
Check whether or not the measurement screen appear on the screen of monitor.
②
②
Keep pushing MODE button while selecting KER_P mode until “KER-P” is to be
indicated on the upper right side of the screen.
③
Measurement of Corneal Center
-
The initial measurement position is the corneal center, and it is indicated as
CENTER on the right upper side of screen. The curvature measured in the
corneal center is the same with the one measured in KER mode.
Содержание HRK-7000
Страница 1: ... Auto Ref Keratometer HRK 7000 7000A 1 User s Manual Auto Ref Keratometer HRK 7000 7000A ...
Страница 43: ... Auto Ref Keratometer HRK 7000 7000A 43 Figure 22 Example of Print ...
Страница 47: ... Auto Ref Keratometer HRK 7000 7000A 47 Figure 24 Example of Print ...
Страница 53: ... Auto Ref Keratometer HRK 7000 7000A 53 Figure 26 Screen indicating KER P Mode ...
Страница 74: ...74 Auto Ref Keratometer HRK 7000 7000A Figure 41 Display of VIRTUAL COMPARISON Mode ...
Страница 84: ...84 Auto Ref Keratometer HRK 7000 7000A ...
Страница 97: ... Auto Ref Keratometer HRK 7000 7000A 97 ...