Invention Grant
- Patent Title: Determining eye surface contour using multifocal keratometry
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Application No.: US16922296Application Date: 2020-07-07
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Publication No.: US11490807B2Publication Date: 2022-11-08
- Inventor: Martin Eil , Ole Massow , Carsten Thomas , Sascha Birkner
- Applicant: Alcon Inc.
- Applicant Address: CH Fribourg
- Assignee: Alcon Inc.
- Current Assignee: Alcon Inc.
- Current Assignee Address: CH Fribourg
- Main IPC: A61B3/14
- IPC: A61B3/14 ; A61B3/10 ; A61B3/02 ; A61B3/00 ; A61B3/107 ; G01B11/25 ; G01B11/255

Abstract:
A system and method for determining eye surface contour using multifocal keratometry is disclosed. The system includes a light source, a light detector, a processor, a non-transitory machine-readable medium communicatively coupled to the processor, and instructions stored on the non-transitory machine-readable medium. The instructions, when loaded and executed by the processor, cause the processor to project a light, using the light source, onto a plurality of surfaces of an eye; create, using the light detector, an image of a plurality of reflections, each of the plurality of reflections created by reflecting the light off of one of the plurality of surfaces of the eye; determine that the plurality of reflections are in focus in the image; and calculate, based on the determination, a curvature of the plurality of surfaces of the eye based on the image.
Public/Granted literature
- US20200337555A1 DETERMINING EYE SURFACE CONTOUR USING MULTIFOCAL KERATOMETRY Public/Granted day:2020-10-29
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