TruForm Optics
Lenses > Presbyopic Designs > Triune Multifocal
Triune Multifocal
Triune Fitting Guide (PDF)
Design
- Translating, segmented lens design
- The intermediate zone is a gradual transition from the full distance power to the full near power
- Recommended to be designed with prism and truncation (truncation is highly recommended for plus power lenses)
Candidates
- Patients requiring sharp distance, functional intermediate, as well as near vision
- Previously adapted rigid lens wearers
- Those patients who require a rigid lens design based on their corneal topography or refraction
Lens Parameters
- Base curves: made to order
- Distance powers: +4.00D to -20.00D
- Near powers: made to order
- Diameters: 8.8mm to 10.0mm
- Materials: use any
Fitting
- It is strongly recommended that a diagnostic lens set be used when fitting the Triune Multifocal lens
- Ten or twenty lens fitting sets are available and come with a one year return guarantee
- Fitting sets are also available for loan from TruForm Optics