Soft lens orthokeratology

US7556375B2 · kind B2 · utility

Assignee

• The Institute for Eye Research Limited · AU

Inventors

• Patrick J. Caroline · Lake Oswego, US
• Peter Bergenske · Alpharetta, US
• Jennifer Denise Choo · Burnaby, CA
• Stacy Sanaz Aboutalebi · Pleasant Hill, US
• Simon Rodney Evans · Forbes, AU
• Arthur Ho · Sydney, AU
• Eric Papaspiliotopoulos · Sydney, AU
• Brien Anthony Holden · Sydney, AU

Key dates

• Filing date: Aug 27, 2004
• Grant date: Jul 7, 2009
• Expiry date: Aug 27, 2024

Classification

• Technology area (CPC G): Physics
• CPC primary: G02C7/047
• WIPO field: Optics
• WIPO sector: Instruments

Abstract

A corneal reshaping by means of a soft contact lens to manipulate tear pressure gradient to produce a dimensional change to the surface profile of the cornea of the wearer to provide at least a temporary change in the refractive state of the eye eliminating the need for other refractive corrections. The contact lens has mechanical properties and/or a geometric shape such that when the lens is fitted to the eye the pressure applied to the eye via the lens will vary in a radial direction between at least one zone of higher pressure and at least one zone of lower pressure so that wearing the lens will over time cause a dimensional change to the surface layer of the cornea.