Patent ID: 11944383
Assignee: CARL ZEISS VISION INTERNATIONAL GMBH
Field: Medical technology (Instruments)
Classification: CPC A | IPC A

Claim 19:
20. A kit comprising:
a computer program, wherein the computer program, when executed on a computing device, causes execution of a method for determining a refractive error of an eye, the method comprising:
capturing a series of images of light from the eye with varying optical power in a light path from the eye to a camera used for capturing the series of images; and
calculating the refractive error of the eye based on the series of images using the series of images as at least approximate point spread functions by determining an optical power where the point spread function is sharpest for at least three meridians, and calculating the refractive error based on the optical powers where the point spread function is sharpest determined for the at least three meridians; and
a hardware unit, the hardware unit including at least one element of the group consisting of:
an illumination device for illuminating the eye, and
an optical power changing device configured to vary the optical power of the light path from the eye to the camera.