Aspheric / centre-near multifocal corneal GP
Multiple labs
Manufacturer / labMultiple labs
Product / familyAspheric multifocal GP
DesignBack-surface aspheric (progressive eccentricity) or concentric front-surface multifocal corneal GP
Corrects / indicated forPresbyopia in a patient who wants GP optics; examples: Boston Multivision, Esslens, Renovation, Reclaim HD, Presbylite
MaterialBoston XO / Optimum Comfort / Paragon HDS 100
Dk100 ×10⁻¹¹ (material)
Overall diameter9.0-10.4 mm
Optic zonevaries by add
Centre thickness~0.15 mm
Power range±25.00
Add power+1.00 to +3.00 (progressive)
Wear scheduledaily wear
ReplacementEvery 1-2 years
Fitting approachAspheric designs need slight inferior decentration / lid-attachment or intra-palpebral centration depending on design; translating (segmented) GP designs need lower-lid apposition at the 4-5 o'clock position.
Translating designs (e.g. Tangent Streak, Solutions) give crisper distance and near than simultaneous aspherics but demand a favourable lower-lid position.
Verify parameters against current manufacturer documentation before fitting.