Position the lens on the tube, with the convex side on the tube.
Move the lens slowly until it is perfectly centered:
• Line up the transition segment between near vision and far vision with the horizontal mark in the
center
• Position the central focimeter dot on the vertical axis of the target.
FAR VISION CENTERING NEAR VISION CENTERING
The lens is centered and ready to be blocked.
To block the lens, refer to the section Centering a lens > Blocking a lens (F p.62).
6. CENTERING A MID-DISTANCE LENS
Prerequisite: before carrying out lens centering, a shape must be displayed on the centering screen.
If necessary, we recommend that you first:
• Modifying or retouching the traced shape (F p.72)
• Preparing the drilling points to be created (option) (F p.82)
• Place the stickers recommended by the manufacturer on hydrophobic lenses (F p.62)
Concerning the use of the stickers, be careful to change the centering tube with a larger diameter one
to optimise the effectiveness of the sticker.
This section describes the procedures for centering a mid-distance lens:
• Using re-marked micro-engravings (F p.58)
• Using manufacturer markings (F p.60)
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