公开(公告)号：US11490807B2

公开(公告)日：2022-11-08

申请号：US16922296

申请日：2020-07-07

Applicant: Alcon Inc.

Inventor： Martin Eil ,  Ole Massow ,  Carsten Thomas ,  Sascha Birkner

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.

公开(公告)号：US20200337555A1

公开(公告)日：2020-10-29

申请号：US16922296

申请日：2020-07-07

Applicant: Alcon Inc.

Inventor： Martin Eil ,  Ole Massow ,  Carsten Thomas ,  Sascha Birkner

IPC: A61B3/107 ,  A61B3/00 ,  A61B3/14 ,  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.