Aspheo offers single-vision wearers the pleasure of total visual freedom. The visual acuity is perfect under all circumstances and for all gaze directions and the visual comfort thus clearly improved. The solution to oblique astigmatism
When the gaze crosses the lens with an oblique line, gaps of dioptria power measurements occur in the peripheral area. The gap is even more important when the lens power is high. As a result, a point seen by the wearer becomes a blurred ellipse. This optical default called oblique astigmatism affects the optical quality of a standard single vision lens. Aspheo greatly minimises blurred peripheral vision and the visual field is wider up to 30%.
An optimisation made possible thanks to Digital Surfacing
Thanks to Digital Surfacing technology which measures with precision all the lens’ data - sphere and cylinder power measurements -, the full prescription is taken into account during the lens manufacturing. Thus, the lens is optimised for all gaze directions.
Taking additional parameters into account, Aspheo PdM preserves Aspheo’s visual acuity performance while being particularly adapted to specific wearing conditions:
Ranges according to the correction required by the wearer