Correcting Presbyopia – Troubleshooting

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No translation: Try a flatter
base curve. Prism and truncation
can also be increased
Picked up too high with blink:
Manage by increasing prism
Seg line bisecting the pupil:
Reorder with lower seg height
and/or increase prism
Decentered laterally with blink:
Try steepening the base curve
Excessive rotation: Try
flattening the base curve
and/or increasing the amount
of prism
Bubbles: Manage by
flattening the base curve

Aspheric Multifocals

Bubbles under lens:
Try a flatter base curve
Lens decentered: Try a
steeper base curve or larger

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