Freeform single vision with DuraTrace for wearers who value fine detail and optical performance across viewing angles.
Application and design rationale
Focus on image performance
ClearMax SV is described as using DuraTrace for surface optical analysis. Compared with frame-focused FlexMax, its description emphasises fine detail and image quality.
| Design identifier | Description |
|---|---|
| Design type | Compensated Aspheric / Atoric Freeform |
Technical specifications
Orderable options depend on prescription, material and current product availability.
| Technical parameter | Value / status |
|---|---|
| Product classMarket Segment | High-end single vision |
| Available materialsAllowed Materials | All materials |
| Pre-calibrationPrecalibration | Yes |
| PersonalisationPersonalization | Yes |
| Prism reference pointPrism Reference Point (PRP) | Geometrical centre |
| TechnologyTechnology | DuraTrace |
| PRP decentration range | 0 to 15 mm |
| Specified indices and options | Refractive indices 1.50, 1.53, 1.60, 1.67 and 1.74 (clear, photochromic and polarised); confirm final availability when ordering. |
Design mechanism and features
Prioritising clarity and contrast
The document describes ClearMax SV as premium single vision using DuraTrace calculations. It aims to manage oblique-gaze errors and maintain image quality from the centre towards the lens periphery.
Difference from FlexMax SV
Both models use DuraTrace. ClearMax's description emphasises image quality and fine detail; FlexMax focuses on compensating frame geometry and angles. Actual results depend on prescription, fitting and use.
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.
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 SV
Single vision personalised to viewing behaviour
Specifications and details
