Lens Geometry

 

Wave, with the designer's input, offers starting design options for single vision, toric, multifocal, ortho keratology and hybrid lens designs. Regardless of the design, Wave produces a lens that is thinner, more comfortable and better centered.

 

One of three lens types is selected after considering Rx and corneal shape: RSym, GSym or FForm (respectively Rotationally Symmetrical, Geometrically Symmetrical, Free Form asymmetric). Think of the types as spherical, toric and asymmetric toric.

 

The software always defaults to the simplest design: single vision Rotationally Symmetric. Up to a certain amount of astigmatism, this initial design may be sufficient. If the designer feels there is too much clearance in the simulated fluorescein, he may opt to design in the GSym mode for a full toric design. Taking this process a step further, for more extreme corneas, the designer make take full advantage of Wave's controls and enter the Free Form mode to design asymmetrically.

 

Learn more about lens types under "Lens Designs"

 

 

Three Lens Geometries

 

Optimizing a Wave fit is accomplished by adjusting the height of eight meridians. Depending on the selected geometry, the designer has differing control of the meridians.

 

Rotationally Symmetric: Spherical shaped geometry. Adjustment of any of the eight meridians has the same equal effect on all meridians.

Geometrically Symmetric: Toric shaped although the toricity is only cut where needed. Adjustment of a semi-meridian of one of the eight meridians only effects the  symmetrical semi-meridian of that meridian.

Free Form: Asymmetric geometry. Adjustment of a semi-meridian of one of the eight meridians only effects that semi-meridian with no effect on the reciprocal semi-meridian.