PURKINJIE IMAGE-BASED ALIGNMENT OF SUCTION RING IN OPHTHALMIC APPLICATIONS

• US 20110187995A1
• Filed: 01/31/2011
• Published: 08/04/2011
• Est. Priority Date: 02/01/2010
• Status: Active Grant

• Current Assignee: LensAR, Inc. (PDL BioPharma, Inc.)
• Original Assignee: LensAR, Inc. (PDL BioPharma, Inc.)
• Inventors: Frey, Rudolph W., Bott, Steven E.
• Granted Patent: US 8,556,425 B2
• Time in Patent Office: Days
• US Class Current: 351/208
• CPC Class Codes: A61F 2009/0087 Lens
• CPC Class Codes: A61F 2009/00872 Cornea
• CPC Class Codes: A61F 2009/00889 Capsulotomy
• CPC Class Codes: A61F 9/00825 for photodisruption
• CPC Class Codes: A61F 9/009 Auxiliary devices making contact with the eyeball and coupling in laser light, e.g. goniolenses apparatus for eye examination A61B3/0008

Abstract

An alignment device including means for releasably attaching a suction ring and means for applying a pattern of light to an eye of a patient. The alignment device further including means for detecting light reflected from the eye and determining whether the suction ring is aligned relative to the eye based on the detected light.

Claims

1. An alignment device comprising:

means for releasably attaching a suction ring;

means for applying a pattern of light to an eye of a patient; and

means for detecting light reflected from said eye and determining whether said suction ring is aligned relative to said eye based on said detected light.

2. An alignment device comprising:

a housing comprising a mechanism that releasably engages a suction ring;

a light source connected to multiple light emitters that are arranged in a pattern so that the light emitters apply light in said pattern of light to an eye of a patient; and

a detector that detects light reflected from said eye and determines whether said suction ring is centered on said eye based on said detected light.

3. A method of aligning a suction ring on an eye, the method comprising:

positioning a suction ring over an eye of a patient;

applying a pattern of light to said eye; and

detecting light reflected from said eye and determining whether said suction ring is aligned relative to said eye based on said detected light.