US 2022/0012459 A1 · IDENTIFICATION AND CONTROL OF MYOPIC PROGRESSION USING DISTORTION

Abstract

Provided are systems (e.g., a modified fundus camera system) and methods for measuring ocular distortion, the methods comprising projecting an image of a known target pattern having characteristic features onto an area of a retinal plane/surface to provide a distorted retinal image of the target pattern across the area of the retinal surface, recording the distorted retinal image of the target pattern using an image sensor to provide a captured distorted retinal image of the target pattern across the area of the retinal surface, identifying the characteristic features of the captured distorted retinal image, and comparing the identified characteristic features of the captured distorted retinal image of the target pattern across the area of the retinal surface to corresponding characteristic features of the known target pattern to provide a map of ocular distortion across the area of the retinal surface. Also provided are systems and methods for measuring retinal shape.

Claims32

Dependent claims

A method for measuring ocular distortion present in an eye, comprising:

illuminating a known target pattern having characteristic features and positioned in plane of an illumination path of a retinal imaging system that is conjugate to a retinal plane;
projecting an image of the target pattern onto an area of the retinal plane to provide a distorted retinal image of the target pattern across the area of the retinal surface;
projecting the distorted retinal image of the target pattern to an image sensor positioned in an imaging path of the retinal imaging system;
recording the distorted retinal image of the target pattern using the image sensor to provide a captured distorted retinal image of the target pattern across the area of the retinal surface;
identifying the characteristic features of the captured distorted retinal image of the target pattern across the area of the retinal surface;
and
comparing the identified characteristic features of the captured distorted retinal image of the target pattern across the area of the retinal surface to corresponding characteristic features of the known target pattern to provide a map of ocular distortion across the area of the retinal surface.

4 more elements

A system for measuring ocular distortion present in an eye, comprising:

a retinal imaging system comprising an illumination system having an illumination source and an illumination path, and an imaging system having an image sensor and an imaging path, wherein the illumination path is configured to project light from the illumination source to a retinal plane of an eye to illuminate a retinal surface area, and wherein the imaging path is configured for projecting scattered light emerging from the illuminated retinal surface area to the image sensor;
and
a known target pattern having characteristic features positioned and configured in a plane of the illumination path that is conjugate to the retinal plane, such that upon illumination an image of the known target pattern is projectable onto the retinal surface area to provide for a distorted retinal image of the target pattern across the area of the retinal surface, and wherein the image sensor is configured for recording of the distorted retinal image of the target pattern across the area of the retinal surface.

Dependencies are inferred from the claim text.

Identification and control of myopic progression using distortion

Life of this patent

Identification and control of myopic progression using distortion

Life of this patent

Abstract

Claims32