The variable focus lens for a better quality of life!

.PX+ Plus belongs to the modern generation of variable focus lenses.

Geometry and design have been consistently adapted to suit the growing needs of presbyopic spectacle wearers. The lenses are characterised by a high degree of spontaneous compatibility and are very comfortable to wear

Optimised geometry, improved design

PX+ Plus variable focus lenses enable the wearer to focus seamlessly over varying distances, preventing images from jumping when the view is changed and coming as close as possible to natural vision.

belongs to the modern generation of variable focus lenses. Geometry and design have been consistently adapted to suit the growing needs of presbyopic spectacle wearers. The lenses are characterised by a high degree of spontaneous compatibility and are very comfortable to wear.

Asymmetrical surface design

Specific surface geometry pursuant to binocular requirements is made possible by sophisticated precision manufacturing technology.

Aspheric functional surface

The increasing demands placed on flat and thin lenses with greater cosmetic appeal are more than satisfied by the aspheric design of the functional surface. In addition, the PX+ Plus higher imaging quality provided by the aspheric design allows an improved utilisation of the field of view.

Binocular optimisation / Variable inset

The inset of the near vision zone is graduated by addition and distance power. The variable inset, i.e. the convergence-aligned position of the near zone, ensures optimum binocular utilization of the near visual fields. The variable inset varies between 2.0 and 4.5 mm (figure right).

Elliptical form

All lenses in the range PX+ Plus are delivered in oval form as standard. This form allows a thickness reduction of up to 25%, depending on distance power and addition. This will primarily be of benefit to plus prescription lenses. The exceptions are minus range mineral lenses; these are still manufactured as round lenses, as there is no cosmetic benefit gain

Thickness reduction achieved

Graphic presentation of astigmatism

Centration according to power, cross hair at centre of pupil. The minimum fitting height is 18 mm.

Prescription prisms:

Ray deflection caused by the prism should be taken into account for the centration of lenses with prescribed prismatic power. The centration points determined for distance must be displaced by 0.25 mm per 1 cm/m in the opposite direction to the prism base.

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