Devices and methods for wavefront sensing and corneal topography

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;
• and
• receiving 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;
• and
• receiving 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;
• and
• determining a deviation of each spot of light received at the respective image sensor.