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US 9,173,561 B2Granted
Alignment apparatus
AssigneeOptos plc (Murgitroyd)
InventorsJennifer Margaret Rice-Jones, Michael James Bartelme
Life of this patent
Estimating the term…
Abstract
An alignment apparatus and method is disclosed, for ensuring correct alignment of a patient's eye with respect to an ophthalmic or optometric instrument. Graphical objects are provided which represent an ideal and an actual position of the eye, and provide for easy and intuitive feedback to an eye care professional operating the instrument on the alignment position of the patient.
Claims30
An alignment apparatus comprising:
- an ophthalmic or optometric instrument;
- a camera arranged to image a patient's eye, in use;
- a processor arranged to receive image data from the camera and to process the image data to determine an eye position by applying an edge detection algorithm to the image data and identifying the position of a limbal ring of an eye;
- and
- a display;
- wherein the processor is arranged to form on the display a first graphical object representative of an ideal eye position and a second graphical object representative of an actual eye position, as determined by the processor.
3 more elements
An alignment method comprising:
- positioning a patient's eye for examination by an ophthalmic or optometric instrument;
- imaging the eye with a camera;
- outputting image data from the camera to a processor;
- determining, at the processor, an eye position, by applying an edge detection algorithm to the image data and identifying a position of a limbal ring of the eye;
- coupling a display with the processor;
- and forming on the display a first graphical object representative of an ideal eye position and a second graphical object representative of an actual eye position, as determined by the processor.
3 more elements
A computer program product encoded with instructions that when run on a computer, cause the computer to receive image data;
- determine an eye position from the image data by applying an edge detection algorithm to the image data and identifying a position of a limbal ring of the eye;
- and transmit a display signal for forming on the display a first graphical object representative of an ideal eye position and a second graphical object representative of an actual determined eye position.
Dependencies are inferred from the claim text.