A soft toric contact lens

A soft toric contact lens

The soft toric contact lens has an essentially rotationally symmetrical front surface (1, 2), possibly having a rotationally symmetrical lenticular structure (2), and an essentially aspherical, in particular ellipsoidal rear surface (7, 8). The optically active central region (7) of the rear surface...

Ausführliche Beschreibung

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Bibliographische Detailangaben
Hauptverfasser: MARTIN REICHNER, PETER HOEFER, WILLI HOERNER, CHRISTOPH HAHNE
Format: Patent
Sprache:eng
Schlagworte:
CONTACT LENSES
OPTICAL ELEMENTS, SYSTEMS, OR APPARATUS
OPTICS
PHYSICS
SPECTACLES
SUNGLASSES OR GOGGLES INSOFAR AS THEY HAVE THE SAME FEATURESAS SPECTACLES
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Beschreibung
Zusammenfassung:The soft toric contact lens has an essentially rotationally symmetrical front surface (1, 2), possibly having a rotationally symmetrical lenticular structure (2), and an essentially aspherical, in particular ellipsoidal rear surface (7, 8). The optically active central region (7) of the rear surface (7, 8) is of toric construction. By displacing the torus onto the central region of the rear surface of the lens, the possibility of economical production, wearable lens thicknesses and economical adaptability are achieved.