Nidek Co., Ltd.

Nidek Technologies S.r.l.

Simone Pajaro

Cesare Tanassi

Mattia Minozzi

Andrea De Giusti

Michele Pascolini

Federico Carraro

Nicola Codogno

Raffaella Bisson

Mauro Campigotto

Phil Buscemi

Ettore Cerulli

Andrea Peroni

The method is used for creating an all-in-focus image of a portion of an iridocorneal angle of an eye starting from a plurality of images (), these images being shallow field-depth images of that portion taken with different focus planes but with a same image frame; the method comprises the steps of: A) pre-processing () said plurality of images so to obtain a plurality of single-channel images if the images of said plurality are color images, B) calculating () an initial focus map starting from said plurality of single-channel images, C) creating () an initial estimated all-in-focus image starting from said initial focus map and said plurality of single-channel images, D) calculating () an initial edge map starting from said initial focus map and said plurality of single-channel images, E) iterating () a regularization process until a stop regularization condition is met, wherein the regularization process comprises removing one or more edge points of the initial edge map by considering a reference model of an iridocorneal angle of an eye, F) creating () said all-in-focus image starting from said plurality of images and a focus map last calculated in step E; the reference model expresses at least one geometrical parameter of a surface of an iridocorneal angle of an eye.

Method of and apparatus for creating an all-in-focus image of a portion of an iridocorneal angle of an eye

An optical equipment suitable for observation of an iridocorneal annular zone of an eye including: an illumination assembly, including at least one illumination electric device for illuminating the zone with a plurality of illumination optical paths for illumination light beams going to a corresponding plurality of sub-portions, an image capturing assembly, including at least one image capturing electric device for capturing images of the zone with a plurality of imaging optical paths for imaging light beams coming from a corresponding plurality of sub-portions, and a front optical assembly having a front surface located close to front surface of an eye, a rear surface located far from front surface of an eye, and including a central portion between the front and rear surfaces and a lateral portion around the central portion; the front optical assembly is stationary; all imaging optical paths pass through central portion between the front and rear surfaces.

Optical equipment for observation of the iridocorneal zone, methods of measuring and/or evaluating the iridocorneal zone

A fundus photographing apparatus includes: a photographing unit including a fundus illumination optical system to illuminate a fundus of a patient's eye and a fundus photographing optical system having a light receiving element to obtain a fundus image of the illuminated eye; and an alignment unit to position the photographing unit with the eye based on a predetermined alignment reference position. The alignment unit includes: an extracting part to extract, by image processing, an image region formed by reflection light from a portion other than the fundus from the fundus image obtained by the fundus photographing optical system; a gravity center calculating part to determine, by arithmetic processing, a gravity center position of the extracted image region; and a control part to perform alignment control of the photographing unit with the eye based on the calculated gravity center position and the alignment reference position.

Fundus photographing apparatus

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Milan, Italy

Simone Pajaro