Multifocal, especially bifocal, intraocular, artificial ophthalmic lens

US4813955A · kind A · utility

Inventors

• Manfred Achatz · Nidderau, DE
• Peter Hofer · Liestal, CH
• Jurgen Strobel · Marburg, DE

Key dates

• Filing date: Sep 7, 1984
• Grant date: Mar 21, 1989
• Expiry date: Sep 7, 2004

Classification

• Technology area (CPC A): Human Necessities
• CPC primary: A61F2002/1683
• WIPO field: Medical technology
• WIPO sector: Instruments

Abstract

A multifocal, especially bifocal, intraocular, artificial ophthalmic lens of transparent material, whose optical lens portion is divided into near range and far range zones and, each of which is disposed on the optical lens portion with approximately equal surface proportions and symmetrically with the lens axis.