Optos plc

Dunfermline, United Kingdom

Optos plc

Dunfermline, United Kingdom
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Patent
Optos Plc | Date: 2017-04-11

A method of determining a geometrical measurement of a retina of an eye, comprising obtaining a two dimensional representation of at least a portion of the retina of the eye (34), deriving a geometrical remapping which converts the two dimensional representation of the retinal portion to a three dimensional representation of the retinal portion (36), using one or more coordinates of the two dimensional representation of the retinal portion to define the geometrical measurement to be taken of the retina on the two dimensional representation (38), using the geometrical remapping to convert the or each coordinate of the two dimensional representation of the retinal portion to an equivalent coordinate of the three dimensional representation of the retinal portion (40), and using the or each equivalent coordinate of the three dimensional representation of the retinal portion to determine the geometrical measurement of the retina of the eye (42).


Patent
Optos PLC | Date: 2017-07-19

An ophthalmoscope (10) comprising a light source (12), a first scanner (14), a first scan transfer element (16), a second scanner (18), and a second scan transfer element (20), which provide a two-dimensional scan of incident light from an apparent point source at a pupillary point of an eye (22) onto the fundus of the eye, and which descan a two- dimensional scan of return light from the fundus of the eye to provide return light from an apparent point source at the first scanner,wherein the first scan transfer element comprises a free-form element which has a shape defined to provide aberration correction of the return light from the fundus of the eye.


Patent
Optos PLC | Date: 2017-07-26

There is provided an apparatus (10; 100) for imaging a retina (12) of an eye (14). The apparatus (10) comprises a wide-angle lens system (18) configured to output light from a light source (16) and receive light from the retina (12) when the apparatus (10; 100) is used to image the retina (12), and a light transfer device (20; 200, 20) having a first focus point (20a; 200a) where the wide-angle lens system (18) is provided, and a second focus point (20b) where the eye (14) is located when the apparatus (10) is used to image the retina (12). The apparatus (10; 100) further comprises a detector (50; 52) configured to receive the light from the retina (12) through the wide-angle lens system (18) when the apparatus (10; 100) is used to image the retina (12). The light transfer device (20; 200, 20) is configured to transfer the light from the wide-field lens system (18) into the eye (14) and the light from the retina (12) into the wide-angle lens system (18) when the apparatus (10; 100) is used to image the retina (12).


Patent
Optos PLC | Date: 2015-05-01

A method of determining a measurement of at least one cell type in an eye, comprising (i) obtaining a map of the cell type in the eye, (ii) obtaining a representation of the retina of the eye, (iii) matching the eye cell type map to the representation of the retina of the eye, (iv) defining a region of interest on the representation of the retina of the eye, (v) calculating a size of the region of interest on the representation of the retina of the eye, (vi) using the matched eye cell type map and the size of the region of interest to determine a measure of the cell type in the region of interest of the retina of the eye.


Patent
Optos PLC | Date: 2016-07-28

The present disclosure provides a method of processing an image comprising receiving a measured image, producing a sharpened image by filtering the measured image to increase its sharpness, and transforming the sharpened image using at least one selected geometric transformation. The present disclosure further provides a computer readable media storing program instructions which, when executed, perform the method of processing an image and a system for processing an image comprising a receiving module which receives a measured image, a sharpening module which produces a sharpened image by filtering the measured image to increase its sharpness, and a transformation module which transforms the sharpened image using at least one selected geometric transformation.


Patent
Optos PLC | Date: 2017-05-17

An ophthalmoscope (1) and method for scanning a fundus (23) of an eye (9), comprising a light system (3) which produces linear light, a scanner (5) which receives at least some of the linear light and is movable about a scan axis to produce a 1D scan of the at least some linear light, and a scan transfer system (7) which receives the 1D scan from the scanner and transfers the 1D scan to the eye, wherein the scanner is positioned in the ophthalmoscope such that it receives the at least some of the linear light substantially along the scan axis, the scan transfer system positioned in the ophthalmoscope such that a pupil of the eye is provided at a focal point of the system, and the scanner is positioned in the ophthalmoscope and the scan transfer system is configured to transfer the 1D scan from the scanner through the focal point at the eye pupil and onto the eye fundus.


Patent
Optos PLC | Date: 2017-03-08

A method of determining a measurement of at least one cell type in an eye, comprising (i) obtaining a map of the cell type in the eye, (ii) obtaining a representation of the retina of the eye, (iii) matching the eye cell type map to the representation of the retina of the eye, (iv) defining a region of interest on the representation of the retina of the eye, (v) calculating a size of the region of interest on the representation of the retina of the eye, (vi) using the matched eye cell type map and the size of the region of interest to determine a measure of the cell type in the region of interest of the retina of the eye.


Patent
Optos PLC | Date: 2016-02-02

A method of reducing jitter error in a laser scanning system adapted to produce a scanned image including a number of lines of an object. The method includes the steps of providing a reference object arranged such that the scanned image produced by the laser scanning system includes a reference image of the reference object, processing the reference image to calculate an error arising from non-repeatable displacement of the lines of the reference image, and adjusting at least one operating parameter of the laser scanning system in response to the calculated error.


Patent
Optos PLC | Date: 2016-02-02

A laser scanning system adapted to produce a scanned image including a number of lines of an object. A method includes the steps of providing a reference object arranged such that the scanned image produced by the laser scanning system includes a reference image of the reference object, processing the reference image to calculate an error arising from non-repeatable displacement of the lines of the reference image, and adjusting at least one operating parameter of the laser scanning system in response to the calculated error.


Patent
Optos PLC | Date: 2016-01-20

Apparatus for illuminating the retina of an eye. The apparatus includes an illumination device and a lens system. The illumination device and the lens system combine to provide incident illumination from an apparent point source located within the lens system. The apparatus also includes an illumination transfer device. The illumination transfer device has two foci and the apparent point source of the lens system is provided at a first focus point of the illumination transfer device and an eye is accommodated at a second focus point of the illumination transfer device. The illumination transfer device transfers the incident illumination from the apparent point source into the eye to illuminate the retina.

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