Patent ID: 11963722
Assignee: AMO DEVELOPMENT, LLC
Field: Medical technology (Instruments)
Classification: CPC A | IPC A

Claim 7:
8. A method, comprising:
producing from a light source light having a linear shape;
direct the light toward an eye via a first lens located one focal length from the light source to produce a virtual image of the linear shape in the eye;
receiving returned light from the eye and providing the returned light to a split-prism;
splitting the returned light into a first linear segment and a second linear segment, by the split-prism;
imaging the first linear segment and the second linear segment onto an image sensor;
determining a first lateral offset between the first linear segment and the second linear segment on the image sensor at a first time;
determining a second lateral offset between the first linear segment and the second linear segment on the image sensor at a second time which is subsequent to the first time;
determining a difference between the first lateral offset and the second lateral offset; and
determining a distance that the eye moved relative to the first lens between the first time and the second time based on the difference between the first lateral offset and the second lateral offset.