Aspheric design that provides all presbyopes with excellent optics at all distances.

Spontan has natural clarity and is wider than in conventional progressive lenses. Minimum peripheral distortion to provide a sharper and clearer image. The design displays continuous clear vision at any distance because of the smooth transtion from distance to intermediate and reading.

When the eyes converge naturally with head and body posture, both eyes orientate towards the nasal side in the near reading zone. Spontan compensates this by alleviating the surface distortion on both nasal pheripheries to ensure optimum binocular usability. The design incorporates optimized distribution in the valuable reading zone, achieving a broadened effective reading area for near vision.