Method and apparatus for fixation measurement and refraction error measurement using wave-front error
AssigneeRebiscan, Inc.
InventorRobert Scott Winsor
Life of this patent
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Abstract
A method and apparatus for fixation measurement includes projecting, by an image projector, a stimulus onto one or more eyes of a patient via a beam splitter, and capturing, by one or more image sensing devices disposed conjugate to the one or more eyes, a reflected image including light reflected from the one or more eyes in response to the stimulus, the reflected image including information indicating the fixation of the one or more eyes.
Claims16
An apparatus for fixation measurement, the apparatus comprising:
- an image projector configured to project a stimulus onto one or more eyes of a patient via a beam splitter;
- and
- one or more image sensing devices disposed conjugate to the one or more eyes, wherein the one or more image sensing devices are configured to capture a reflected image including light reflected from the one or more eyes in response to the stimulus and wherein the reflected image includes information indicating the fixation of the one or more eyes.
A method for fixation measurement, the method comprising:
- projecting, by an image projector, a stimulus onto one or more eyes of a patient via a beam splitter;
- and
- capturing, by one or more image sensing devices disposed conjugate to the one or more eyes, a reflected image including light reflected from the one or more eyes in response to the stimulus, wherein the reflected image includes information indicating the fixation of the one or more eyes.
An apparatus for measurement of refractive error, the apparatus comprising:
- an image projector configured to project a stimulus onto one or more eyes of a patient via a beam splitter;
- a lens disposed between the stimulus and the one or more eyes, the lens having a focal length and position relative to the stimulus such that the stimulus appears to the patient to be further away than it is;
- one or more image sensing devices disposed conjugate to the one or more eyes, wherein the one or more image sensing devices are configured to capture one or more reflected images including light reflected from the one or more eyes in response to the stimulus;
- and
- one or more focusing lenses disposed between the one or more image sensing devices and the one or more eyes, wherein the one or more focusing lenses are configured to focus the light reflected from the one or more eyes onto the one or more image sensing devices and wherein the one or more focusing lenses are configured to be displaced along an axis to thereby alter the one or more reflected images captured by the one or more image sensing devices.
A method for measurement of refractive error, the method comprising:
- projecting, by an image projector, a stimulus onto one or more eyes of a patient via a beam splitter, wherein a lens disposed between the stimulus and the one or more eyes which has a focal length and position relative to the stimulus such that the stimulus appears to the patient to be further away than it is;
- focusing, by one or more focusing lenses disposed between one or more image sensing devices and the one or more eyes, the light reflected from the one or more eyes onto the one or more image sensing devices, wherein the one or more focusing lenses are configured to be displaced along an axis to thereby alter one or more reflected images captured by the one or more image sensing devices;
- and
- capturing, by the one or more image sensing devices disposed conjugate to the one or more eyes, the one or more reflected images including light reflected from the one or more eyes in response to the stimulus.
Dependencies are inferred from the claim text.