The product sheet specifies zero inset. Selection must align with binocular status and the practitioner's prescription.
Application and design rationale
Zero inset, a specialist choice
This model's table specifies zero inset. Do not generalise it to all progressives; suitability for the wearer's visual status requires professional prescription.
| Design identifier | Description |
|---|---|
| Category | Specialist progressive lens for monocular wearers |
| Design type | Adaptive |
Technical specifications
Orderable options depend on prescription, material and current product availability.
| Technical parameter | Value / status |
|---|---|
| Product classMarket Segment | High-end progressive |
| Design typeDesign Type | Adaptive |
| Available materialsAllowed Materials | All materials |
| Pre-calibrationPrecalibration | Yes |
| PersonalisationPersonalization | Yes (full personalisation) |
| Prism reference pointPrism Ref. Point (PRP) | Geometrical Center |
| Distance reference pointDistance Ref. Point (DRP) | +10 mm |
| Fitting reference pointLayout Reference Point (LRP) | +4 mm |
| InsetInset | 0 |
| Near reference pointNear Ref. Point (NRP) | 11–17 mm |
| Addition rangeAddition Range | +0.75 to +4.50 D |
| PRP decentration range | 0 to 12 mm |
| Specified indices and options | Refractive indices 1.50, 1.53, 1.60, 1.67 and 1.74; confirm final availability when ordering. |
Design mechanism and features
Near corridor without inset
MonoMax is described for monocular visual needs, with zero inset. Its near path has no nasal displacement. This specification must not be generalised into a prescription rule for every monocular wearer.
Personalisation and power range
The document lists Adaptive design, active personalisation, 11–17 mm NRP and +0.75 to +4.50 D addition. Addition selection depends on prescription and working distance.
DuraTrace calculations
DuraTrace is described as managing oblique-gaze errors in surface design, aiming to maintain viewing-zone performance alongside individual corridor positioning.
Technologies in this design
- DuraTrace
- Ray-tracing calculations and optical-aberration optimisation in surface design.
Measure before manufacture
Required parameters vary by design and must be recorded by a professional.
- Monocular PD
- Each eye's pupillary distance is recorded separately to align horizontal lens positioning with the visual axis.
- Fitting Height
- Fitting height is recorded on the adjusted frame in the natural position of wear; the required near zone must also fit within the frame.
- BVD
- Distance from the rear lens surface to the corneal apex; relevant to power-compensation calculations in personalised models.
- Pantoscopic Angle
- The frame's vertical tilt in the position of wear must be measured; example values are not substitutes for measurement.
- Wrap Angle
- The horizontal curvature of the frame relative to the face, describing lens positioning.
- Box A
- Horizontal width of the frame opening in the boxing system.
- Box B
- Vertical height of the frame opening in the boxing system.
- DBL
- Distance between the two lens boxes at the frame bridge.
- ED
- Effective diameter: twice the greatest distance from the boxing centre to the lens-shape edge, used for blank selection and edging calculations.
Design-specific inputs
- Zero Inset (Inset = 0): unlike standard lenses with Core Inset or DuraFit Inset (2–4 mm inward displacement), MonoMax specifies 0 mm. The document explains this by the absence of binocular convergence in monocular vision and a vertically descending reading path.
Monocular pupillary distance
For aligning the lens centre with each eye's visual axis.
Fitting height
Vertical pupil position relative to the frame in the position of wear.
Back vertex distance
One of the inputs describing the actual position of wear.
These are basic fitting parameters; additional inputs and the level of personalisation are specified for each model.
Complete parameter guide ↖View the original catalogue page
In this family
UltraMax Progressive
Progressive design adapted to viewing behaviour
Specifications and details
