Abstract: An ophthalmic examination apparatus, characterized in that the ophthalmic examination apparatus comprises at least one visual radiation source and a light manipulation arrangement, which is configured to receive light from the visible radiation source, and form light patterns from the light and direct at least one light pattern of the light patterns in a converging manner toward an pupil aperture in a pupil plane of the ophthalmic examination apparatus and locate the at least one light pattern at a non-zero radial distance from a pupil center of the pupil aperture such that a waist of the light patterns is located at the pupil plane in order to provide a person with guidance for enabling an aperture of an iris of his/her eye to approach and/or locate at the pupil aperture in the pupil plane.

Abstract: An ophthalmic apparatus comprises an optical arrangement that causes or imitates, for forming at least one image that is in focus, a longitudinal chromatic and/or spherical aberration of an optical spectrum of light, while the retina is configured to locate within a longitudinal aberration range of the aberration in response to a distance between the ophthalmic apparatus and the eye being within a working range of the ophthalmic apparatus. An image capturing arrangement captures one or more images of the retina through the imaging channel while the distance between the ophthalmic apparatus and the eye is within a working range of the ophthalmic apparatus. A filter filters at least one image from the one or more images of the retina that is in focus for further processing in a data processing unit of the ophthalmic apparatus.

Abstract: An ophthalmic apparatus comprises an alignment arrangement, which outputs rays of alignment light of a first alignment pattern in a converging manner toward a first target plane, forms a predetermined reflection pattern of the first alignment pattern on said first target plane based on the convergence, causes the rays of the alignment light to have an alignment light waist zone that includes the first target plane based on the convergence, causes a reflection pattern of the first alignment pattern outside the first target plane to deviate from the predetermined reflection pattern based on the convergence.

Abstract: An ophthalmic apparatus comprises an illumination channel for illuminating a retina of an eye in response to a distance between the ophthalmic apparatus and the eye being within a working range of the ophthalmic apparatus. An imaging channel collects light reflected from the retina. An image capturing arrangement captures images of the retina through the imaging channel while the distance between the ophthalmic apparatus and the eye is within a working range of the ophthalmic apparatus. A chromatic arrangement causes and/or imitates a longitudinal chromatic aberration of light directed toward an eye while a longitudinal aberration range is at least partially overlapping with a frontal section of an eye between an outer surface of a cornea and a rear surface of a crystalline lens in response to a distance between the ophthalmic apparatus and the eye being within a working range. A collection optics collects light reflected from the frontal section of the eye.

Abstract: An ophthalmic apparatus comprises a visible light illumination channel, which illuminates a retina of an eye of a patient under examination by visible light. A near-infrared illumination channel illuminates the retina of the eye of the patient under examination by near-infrared light. An imaging channel receives light from the retina of the eye illuminated by the visible light and/or the near-infrared light. A target channel outputs fixation image content to a patient whose eye is under the examination for fixation of a gaze direction of the patient. An alignment arrangement illuminates the anterior part of the eye and reflections therefrom are received by two of a fundus camera sensor and a first and second pupil camera sensors. A data processing unit determines an optimal positional alignment of the eye for imaging a fundus of the eye by a fundus camera sensor based on still image and/or video capture of the anterior part of the eye.

Abstract: An ophthalmic apparatus includes an optical radiation source, which direct rays of optical radiation in a converging manner toward a reference plane, and causes the projections of the rays of optical radiation on a plane parallel to the normal of the reference plane to cross at a plane parallel to the reference plane and located deterministically relative to the reference plane, the crossing forming an alignment pattern of optical radiation on the reference plane. The ophthalmic apparatus, when directed toward the eye, captures images in a direction toward the reference plane including an area, where rays of optical radiation cross, and presents information on a pattern formed by the rays on a surface of a person or mammal whose eye the ophthalmic apparatus is directed toward. The alignment pattern when projected on an iris of the eye indicates that the iris of the eye is at the reference plane.

Abstract: A focus measuring arrangement for ophthalmic examination comprises an infrared light source system, which directs infrared light to a pupil of an eye of a person and forms a focusing pattern of the infrared light on a retina. A receiving arrangement apertures receives the infrared light of the focusing pattern from the retina through separate areas of the pupil. An image forming arrangement causes the infrared light passed through the apertures to form an individual image of the focusing pattern for each of the apertures in an image space of the receiving arrangement, the image forming arrangement causing an optical correspondence between the at least two apertures and the separate areas of the pupil. A detecting surface arrangement is located at a non-zero distance behind the at least two apertures and the image forming arrangement in a direction of propagation of the infrared light reflected from the retina for receiving the infrared light passed through the at least two apertures.

Abstract: Apparatus and method for imaging fundus of eye. The apparatus (100) includes an optical system (116), an image sensor (114) to capture a still image or a video through the optical system (116), a user interface (102) including a display (104) to display data to a user of the apparatus, and one or more processors (106). The one or more processors (106) cause performance of at least the following: setting the image sensor (114) to capture an aiming video; detecting a retina of the eye in the aiming video; setting the display (104) to display the aiming video with a highlight of the detected retina; and setting the image sensor (114) to capture one or more final still images of the fundus or a final video of the fundus.