Gilras GRK-7000, User Manual

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54 Auto Ref/Keratometer GRK-7000 -------------------------------------------------------------
8.4. Measurement of Contact Lens Base Curve(CLBC Mode)
It is the mode to measure base curve of contact lens (concave surface).
1. Check whether or not the measurement screen appears on the screen of mo
nitor.
2. Keep pushing MODE button while selecting CLBC mode until “CLBC” is to be
indicated on the right upper side of screen.
3. Adhesion of Contact Lens
-
Put the surface of contact lens to be measured to
the upward direction.
-
Contact lens is to be adhered by the surface tensi
on.
-
Be careful lest contact lens should be adhered tilti
ng. Also, make sure that air bubbles should not be
generated behind contact lens.
4. Sticking of Model Eye
-
Fix the model eye stuck with contact lens with pushing pin after taking t
he chin-rest paper away. Let contact lens dir
ected to the measurement window.
5. Adjustment of Position and Focus
-
Let Mire image come into the center of exte
rnal array ring by slowly pushing and rotatin
g the operation lever.
-
Adjust the focus so that the outline of Mire
image can be seen most apparent. As the fo
cus is adjusted, the circle symbol appears on the bright dot.
[ Figure 25. Adhesion of Contact Lens ]
[ Figure 26. Adhesion of Model Eye
]