Apparatus for monitoring one or more parameters of the eye

US9125559B2 · kind B2 · utility

Assignee

• Alcon Pharmaceuticals, Ltd. · CH

Inventors

• Oliver Kersting · Kleinmachnow, DE
• Martin Gründig · Rangsdorf, DE

Key dates

• Filing date: Oct 22, 2012
• Grant date: Sep 8, 2015
• Expiry date: Oct 22, 2032

Classification

• Technology area (CPC A): Human Necessities
• CPC primary: A61F9/007
• WIPO field: Medical technology
• WIPO sector: Instruments

Abstract

An apparatus for monitoring one or more parameters of the eye of a patient over multiple sessions which are temporally spaced apart and between which the eye of the patient can have moved, said apparatus comprising: a camera for taking one or more images of the eye; an illumination unit for illuminating the eye by a ring-shaped light pattern to generate corneal reflections, said illumination unit being preferably located such that the center of the ring is coaxial with the optical axis of the camera; a module for determining during a first session the location of the corneal reflections in the image of the eye; a module for determining during said first session based on said determined location of the corneal reflections, at least one further parameter of the eye and its coordinates in a first coordinate system based on a geometrical model representing the eye as a spherical eyeball having a spherically shaped cornea mounted thereon; a module for determining during a second session temporally spaced apart from said first session said location of said corneal reflections of the eye and based thereon said further eye parameter and its coordinates in a second coordinate system; a modu…