Devices and methods for wavefront sensing and corneal topography

摘要

Devices and methods for wavefront sensing and keratometry are described. A device includes a lens assembly, a wavefront sensor, and a keratometer. The wavefront sensor includes: the lens assembly; a first light source configured to emit first light and transfer the first light emitted from the first light source toward an eye through the lens assembly; an array of lenses that is distinct from the lens assembly; and a first image sensor configured to receive light, from the eye, transmitted through the lens assembly and the array of lenses. The keratomer includes: the lens assembly; a second light source that is distinct from the first light source and configured to emit second light and transfer the second light emitted from the second light source toward the eye; and a second image sensor configured to receive light, from the eye, transmitted through the lens assembly.

主权项

1. A method performed by a portable device comprising a lens assembly, a wavefront sensor, and a keratometer, the method comprising:
transferring first light emitted from a first light source toward an eye through the lens assembly; in response to transferring the first light emitted from the first light source toward the eye through a lens assembly:
transferring light from the eye through the lens assembly and an array of lenses; andreceiving the light from the eye, transferred through the lens assembly and the array of lenses, at a first image sensor; transferring second light emitted from a second light source toward the eye; in response to transferring the second light emitted from the second light source toward the eye:
transferring light from the eye through the lens assembly; andreceiving the light from the eye, transferred through the lens assembly, at a second image sensor; analyzing the light received at the first image sensor and determining one or more aberrations associated with the eye; providing information that indicates the one or more aberrations associated with the eye; analyzing the light received at the second image sensor and determining a curvature of a cornea of the eye; and providing information that indicates the curvature of the cornea of the eye, wherein:
the light received at the first image sensor has a pattern of a first array of spots;the light received at the second image sensor has a pattern of a second array of spots;analyzing the light received at the first image sensor and analyzing the light received at the second image sensor both include:
determining a centroid of the light received at a respective image sensor; anddetermining a deviation of each spot of light received at the respective image sensor.