Huvitz CRK-1, Service Manual, Page: 84 / 88

---------------------------------------------------------------------------------------------- Auto Ref/Keratometer CRK-1 83
(example) F
1
＝
+10D, d
＝
+3mm : F
2
＝
+9.71D
F
1
＝
+10D, d
＝
-3mm : F
2
＝
+10.30D
F
1
＝
-10D, d
＝
+2mm : F
2
＝
-9.80D
F
1
＝
-10D, d
＝
-2mm : F
2
＝
-10.20D
The following four kinds of data can be chose according to examinee in ‘User Setup Mod
e’.
VD
＝
0.0mm: hard contact lens
VD
＝
12.0mm: lens of glasses (oriental people)
VD
＝
13.5mm: lens of glasses (western people)
VD
＝
15.0mm: lens of glasses (western people)
(3) Cylinder Form
There are three kinds of cylinder form.
－
: A form displaying the data using minor meridian. Refraction power of the minor
meridian is displayed as SPH and the axis as AX. The difference between the m
ajor and minor meridian is displayed as –CYL.
＋
: A form displaying the data using major meridian. Refraction power of the major
meridian is displayed as SPH and the axis as AX. The difference between the m
F
1
: Refraction Power with the standard VD in diopter
F
2
: Refraction Power with changed VD in diopter