Patent ID: 11896305
Assignee: AMO DEVELOPMENT, LLC
Field: Medical technology (Instruments)
Classification: CPC A | IPC A

Claim 0:
1. A system, comprising:
a wavefront aberrometer configured to measure a refraction of an eye;
at least one processor;
a video display device; and
an optical system disposed in an optical path between the video display device and the eye, wherein the video display device presents a fixation target to the eye to cause the eye to accommodate during a process of measuring the refraction of the eye, and wherein the at least one processor is configured to dynamically change the fixation target on the video display device to compensate for Bokeh of the fixation target as the video display device is moved from a first position, where the fixation target draws a focus of the eye to near its far point, to a second position which is further away from the eye than the first position, wherein the fixation target includes at least two lines intersecting at at least one intersection, and wherein the at least one processor is configured to dynamically change the fixation target by:
either: dynamically reducing a thickness of each of the lines as the video display device is moved further away from the eye,
or: dynamically increasing a taper of each of the lines down to the intersection as the video display device is moved further away from the eye,
or: dynamically decreasing an intensity of the lines within and near the intersection as the video display device is moved further away from the eye.