Abstract: A multi-spectral light generating unit, a fundus imaging system, and a fundus imaging method. The multi-spectral light generating unit includes one or more illumination units and a control unit; each illumination unit includes a light-emitting diode matrix, each light-emitting diode matrix emits light of multiple wavelengths; converting, by the control unit, the control instruction sent by the central controller into a control signal; triggering, by the control unit, the specified light-emitting diode matrix of the specified illumination unit to emit light of a preset wavelength and preset energy to output the multi-spectral light.

Abstract: Disclosed is a fundus camera, which relates to the technical field of medical devices and includes: an illumination module, a main optical assembly, a focusing module, and an image sensing acquisition module; the illumination module includes a plurality of light sources configured to emit light of different wavelengths, illumination light emitted by the plurality of light sources is conducted to enter an eye of a patient through the main optical assembly, and light reflected by a retina of the patient is conducted to pass through the main optical assembly and the focusing module to enter the image sensing acquisition module. The fundus camera provided by the present application improves the technical problem that the fundus camera in the prior art cannot image different layers of the retina, thereby providing valuable medical and diagnostic data.

Abstract: Retina digital imaging system, instrument and method A retina digital imaging system includes: an illumination module (1), a main optical assembly (3), and an image sensor module (2); the illumination module (1) includes light-emitting diodes capable of emitting light with different wavelengths, and each light-emitting diode emits light to enter the retina through the main optical assembly (3) to form an illumination optical path; the light reflected by the retina passes through the main optical assembly (3) and forms an image on the image sensor module (2) to form an imaging optical path. The various spectral bands formed by light-emitting diodes may form a wider spectrum, so different layers of the retina may be imaged to provide valuable medical and diagnostic data.

Abstract: A real time stereo fundus viewer is disclosed which uses IR illumination introduced either corneally or through the sclera, arranged for frontal or rear illumination of the posterior regions of the eye and displayed using two miniature false colour displays; with the option of OCT.

Abstract: A method for quantifying disease progression through retinal health assessment and management. The method comprises obtaining a first image of a retina or iris at a point in time; generating a first vascular map of the first image of the retina or the iris; obtaining a second image of the retina or the iris at a later point in time; generating a second vascular map of the second image of the retina or the iris; registering the first image and the second image on the basis of the first vascular map and the second vascular map; and displaying at least one difference between the registered first image and the second image to quantify a disease progression.

Abstract: A method for quantifying disease progression through retinal health assessment and management. The method comprises obtaining a first image of a retina or iris at a point in time; generating a first vascular map of the first image of the retina or the iris; obtaining a second image of the retina or the iris at a later point in time; generating a second vascular map of the second image of the retina or the iris; registering the first image and the second image on the basis of the first vascular map and the second vascular map; and displaying at least one difference between the registered first image and the second image to quantify a disease progression.

Abstract: A blood species concentration tester, and corresponding method, are disclosed herein. The tester employs the measurement of the characteristics of at least one wavelength of light returned from the eye of a patient to determine the concentration of a species, such as glucose, in a blood stream. The correlation of the characteristics of the at least one wavelength with each other, is utilised to derive an accurate measure that can provide a simpler and more accurate test of blood sugar levels, along with other species concentration levels.

Abstract: A multi-level control system for optical components is disclosed herein. The control of optical components uses the representation of an optical component as an optical function, and the ability to represent a plurality of optical functions as a compound optical function that can be controlled by a higher level controller.