Paire de lentilles ophtalmiques multifocales progressives

In a pair of progressive multifocal ophthalmic lenses, in which each lens has an aspherical surface comprising a far vision portion, a near vision portion, an intermediate vision portion, and a prime meridian of power progression passing through these three portions, the prime meridians of progressi...

Ausführliche Beschreibung

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Bibliographische Detailangaben
Hauptverfasser: BOURDONCLE BERNARDDELDALLE BENEDICTE, ASHBAHS FRANCOISE, MIEGE CHRISTIAN
Format: Patent
Sprache:fre
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Beschreibung
Zusammenfassung:In a pair of progressive multifocal ophthalmic lenses, in which each lens has an aspherical surface comprising a far vision portion, a near vision portion, an intermediate vision portion, and a prime meridian of power progression passing through these three portions, the prime meridians of progression of the lenses are substantially symmetrical with respect to each other, and one of the lenses is more particularly dedicated to far vision and the other is more particularly dedicated to near vision, the lens dedicated to far vision having a more extensive far vision portion than the far vision portion of the lens dedicated to near vision, and the lens dedicated to far vision having a less extensive near vision portion than the near vision portion of the lens dedicated to near vision.