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

Claim 13:
14. An instrument, comprising:
a light source configured to produce light having a linear shape;
an optical coherence tomographer (OCT) configured to output an eye measurement laser beam;
a first beamsplitter configured to receive the light from the light source and to direct the light in a first direction;
a second beamsplitter configured to receive the eye measurement laser beam and the light from first beamsplitter;
a first lens located one focal length from the light source and configured to receive the light and the eye measurement laser beam from the second beamsplitter, to direct the light to an eye to produce a virtual image of the linear shape in the eye, and to direct the eye measurement laser beam to the eye, and further configured to receive returned light from the eye and a return eye measurement laser beam from the eye and to provide the returned light and the return eye measurement laser beam to the second beamsplitter, wherein the second beamsplitter is further configured to direct the returned light to the first beamsplitter and to direct the return eye measurement laser beam to the OCT;
a second lens;
a split-prism;
a third lens;
an image sensor; and
a processor,
wherein the second lens is configured to receive the returned light from the first beamsplitter and provide the returned light to the split-prism,
wherein the split-prism is configured to receive the returned light from the second lens and provide the returned light to the third lens;
wherein the third lens is configured to image the returned light onto the image sensor,
wherein the image sensor is configured to output an image signal to the processor,
wherein the processor is configured to process the image signal to determine a change in the linear shape of the returned light on the image sensor from a first time to a second time subsequent to the first time, and to determine a distance the eye moved relative to the first lens between the first time and the second time based on the change in the linear shape of the returned light which is imaged onto the image sensor,
wherein the OCT is configured to measure a first portion of a distance within the eye at the first time using the return eye measurement laser beam;
wherein the OCT is configured to measure a second portion of the distance within the eye at the second time using return eye measurement laser beam; and
wherein the processor is configured to determine the distance within the eye from the measured first portion, the measured second portion, and the determined distance that the eye moved relative to the first lens between the first time and the second time.