3-25
■
2) Touch the measurement position display button (2) to select the section to be
displayed.
φ2.0mean /φ2.5 /φ3.0
φ2.0mean displays only mean values.
When measurement position φ3.0 is selected, the indexes of KAI and KRI (3)
measured by keratometer measurement are displayed. KAI represents
asymmetry of the corneal shape and KRI represents regularity (irregularity)
of the corneal shape. A larger value for this index means irregular
astigmatism.
Possibility of corneal irregular astigmatism is shown as levels A, B, and C.
Level A : Improbable to be corneal irregular astigmatism such as
keratoconus
Level B : Slightly probable to be corneal irregular astigmatism such as
keratoconus
Level C : Highly probable to be corneal irregular astigmatism such as
keratoconus
Thresholds for levels A, B, and C are as shown below.
A (Green) B (Yellow) C (Red)
KAI 0.0 ~ 23.4 23.5 ~ 29.0 29.1 ~
KRI 0.0 ~ 4.4 4.5 ~ 5.2 5.3 ~
(Refer to “4.5 Corneal irregular astigmatism display function.”)
3) Touch the “mm/D” button (4) to change the unit for display.
4) “*” is shown for the data used for IOL power calculation. To select the desired
data, move the cursor to the desired data using the cursor button (4) and
then touch the “Select" button (6). The specified data is selected for IOL
power calculation.
If the measurement value lacks reliability because the patient’s eyelid and/or
eyelashes interfere with the measuring point etc., “!” appears (7).
b) Deleting and recovering measurement values
Refer to “3.3.4 b) Deleting and recovering measurement values.”
c) Auxiliary function for toric lens
(Fig. 1)
1) Touch the “Toric” button (1) on the kerato view screen to open the auxiliary
function screen for eyes with a toric lens (Fig. 2).
(1)
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