LOW-CONVERGENCE NEGATIVE POWER SPECTACLES

LOW-CONVERGENCE NEGATIVE POWER SPECTACLES

A convergence-reducing lens, wherein a central normal (3) of the convergence-reducing lens defines a z-axis, and a center of the convergence-reducing lens defines a tangential, centered x-y plane, together defining a coordinate system, the convergence-reducing lens comprising a distance-vision regio...

Ausführliche Beschreibung

Gespeichert in:
Bibliographische Detailangaben
Hauptverfasser: KRALL, Jeffrey, P, PLUMLEY, Aric
Format: Patent
Sprache:eng ; fre ; ger
Schlagworte:
CONTACT LENSES
OPTICS
PHYSICS
SPECTACLES
SUNGLASSES OR GOGGLES INSOFAR AS THEY HAVE THE SAME FEATURESAS SPECTACLES
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Beschreibung
Zusammenfassung:A convergence-reducing lens, wherein a central normal (3) of the convergence-reducing lens defines a z-axis, and a center of the convergence-reducing lens defines a tangential, centered x-y plane, together defining a coordinate system, the convergence-reducing lens comprising a distance-vision region (110), having a negative distance-vision optical power, and center of curvature radii of front and rear lens surface lying on the z-axis; and a near-vision region (120), having a near-vision optical power that matches the distance-vision optical power within 0.5D, and having a center of curvature of front surface lying to the nasal side of the z-axis. or a center of curvature of the rear surface lying to the temporal side of the z-axis.