Aspheric Multifocals
Fitting
- Follow recommended fitting guidelines; high eccentricity designs are often fit a minimum of 2.5D steeper than “K”; lower eccentricity designs are fit 1 – 2D steeper than “K”
- Have, at minimum, one diagnostic fitting set of these lenses; for recommendations, call your CLMA member laboratory
- Good candidates:
- Low-medium add requirements
- Computer users
- Small-medium size pupil diameter
- Good centration is critical
- No greater than 1mm of movement with the blink is desirable
Problem-Solving
- Excessive movement: Change to a steeper base curve radius
- Peripheral sealoff; adherence: Change to a flatter base curve radius
- Lateral decentration may need to change to another type of lens design
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